122102012121 has 4 divisors (see below), whose sum is σ = 162802682832. Its totient is φ = 81401341412.

The previous prime is 122102012101. The next prime is 122102012183. The reversal of 122102012121 is 121210201221.

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 122102012121 - 2⁹ = 122102011609 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 122102012121.

It is not an unprimeable number, because it can be changed into a prime (122102012101) 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, 20350335351 + ... + 20350335356.

It is an arithmetic number, because the mean of its divisors is an integer number (40700670708).

Almost surely, 2^122102012121 is an apocalyptic number.

It is an amenable number.

122102012121 is a deficient number, since it is larger than the sum of its proper divisors (40700670711).

122102012121 is an equidigital number, since it uses as much as digits as its factorization.

122102012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40700670710.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 122102012121 its reverse (121210201221), we get a palindrome (243312213342).

The spelling of 122102012121 in words is "one hundred twenty-two billion, one hundred two million, twelve thousand, one hundred twenty-one".