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122102210101 = 313938780971
BaseRepresentation
bin111000110110111011…
…0111101111000110101
3102200011111211221121211
41301231312331320311
54000031131210401
6132032030041421
711551543442554
oct1615566757065
9380144757554
10122102210101
1147868572743
121b7b7949271
13b68b89a181
145ca4609d9b
153299807951
hex1c6ddbde35

122102210101 has 4 divisors (see below), whose sum is σ = 126040991104. Its totient is φ = 118163429100.

The previous prime is 122102210077. The next prime is 122102210129. The reversal of 122102210101 is 101012201221.

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.

It is a cyclic number.

It is not a de Polignac number, because 122102210101 - 213 = 122102201909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122102210161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1969390455 + ... + 1969390516.

It is an arithmetic number, because the mean of its divisors is an integer number (31510247776).

Almost surely, 2122102210101 is an apocalyptic number.

It is an amenable number.

122102210101 is a deficient number, since it is larger than the sum of its proper divisors (3938781003).

122102210101 is an equidigital number, since it uses as much as digits as its factorization.

122102210101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3938781002.

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

Adding to 122102210101 its reverse (101012201221), we get a palindrome (223114411322).

The spelling of 122102210101 in words is "one hundred twenty-two billion, one hundred two million, two hundred ten thousand, one hundred one".

Divisors: 1 31 3938780971 122102210101