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122101210201 = 1091120194589
BaseRepresentation
bin111000110110111001…
…1001001110001011001
3102200011102222011000111
41301231303021301121
54000030402211301
6132031552404321
711551532106445
oct1615563116131
9380142864014
10122101210201
1147867a4a483
121b7b75466a1
13b68b60a009
145ca4429825
1532996ab551
hex1c6dcc9c59

122101210201 has 4 divisors (see below), whose sum is σ = 123221404900. Its totient is φ = 120981015504.

The previous prime is 122101210117. The next prime is 122101210219. The reversal of 122101210201 is 102012101221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 103243329225 + 18857880976 = 321315^2 + 137324^2 .

It is a cyclic number.

It is not a de Polignac number, because 122101210201 - 27 = 122101210073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122101210901) 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, 560097186 + ... + 560097403.

It is an arithmetic number, because the mean of its divisors is an integer number (30805351225).

Almost surely, 2122101210201 is an apocalyptic number.

It is an amenable number.

122101210201 is a deficient number, since it is larger than the sum of its proper divisors (1120194699).

122101210201 is a wasteful number, since it uses less digits than its factorization.

122101210201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120194698.

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

Adding to 122101210201 its reverse (102012101221), we get a palindrome (224113311422).

The spelling of 122101210201 in words is "one hundred twenty-two billion, one hundred one million, two hundred ten thousand, two hundred one".

Divisors: 1 109 1120194589 122101210201