122102002020121 has 16 divisors (see below), whose sum is σ = 127600252093440. Its totient is φ = 116619548755600.

The previous prime is 122102002020101. The next prime is 122102002020137. The reversal of 122102002020121 is 121020200201221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 122102002020121 - 2¹⁵ = 122102001987353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122102002020095 and 122102002020104.

It is not an unprimeable number, because it can be changed into a prime (122102002020101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1208270046 + ... + 1208371096.

It is an arithmetic number, because the mean of its divisors is an integer number (7975015755840).

Almost surely, 2^{122102002020121} is an apocalyptic number.

It is an amenable number.

122102002020121 is a deficient number, since it is larger than the sum of its proper divisors (5498250073319).

122102002020121 is a wasteful number, since it uses less digits than its factorization.

122102002020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178676.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 122102002020121 its reverse (121020200201221), we get a palindrome (243122202221342).

The spelling of 122102002020121 in words is "one hundred twenty-two trillion, one hundred two billion, two million, twenty thousand, one hundred twenty-one".