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122010110221 = 1151106003571
BaseRepresentation
bin111000110100001011…
…1101000100100001101
3102122221002112210100011
41301220113220210031
53444334042011341
6132014540033221
711546344553026
oct1615027504415
9378832483304
10122010110221
114782058773a
121b790b32811
13b6757914bc
145c962b3c4d
1532916b3b81
hex1c685e890d

122010110221 has 4 divisors (see below), whose sum is σ = 122116114944. Its totient is φ = 121904105500.

The previous prime is 122010110153. The next prime is 122010110263. The reversal of 122010110221 is 122011010221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 122011010221 = 244639498739.

It is a cyclic number.

It is not a de Polignac number, because 122010110221 - 221 = 122008013069 is a prime.

It is a super-2 number, since 2×1220101102212 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122010110291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53000635 + ... + 53002936.

It is an arithmetic number, because the mean of its divisors is an integer number (30529028736).

Almost surely, 2122010110221 is an apocalyptic number.

It is an amenable number.

122010110221 is a deficient number, since it is larger than the sum of its proper divisors (106004723).

122010110221 is a wasteful number, since it uses less digits than its factorization.

122010110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106004722.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 122010110221 its reverse (122011010221), we get a palindrome (244021120442).

The spelling of 122010110221 in words is "one hundred twenty-two billion, ten million, one hundred ten thousand, two hundred twenty-one".

Divisors: 1 1151 106003571 122010110221