122020122212121 has 32 divisors (see below), whose sum is σ = 190268262553600. Its totient is φ = 68101119080064.

The previous prime is 122020122212117. The next prime is 122020122212143. The reversal of 122020122212121 is 121212221020221.

It is not a de Polignac number, because 122020122212121 - 2² = 122020122212117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (122020122212621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16585101 + ... + 22783893.

It is an arithmetic number, because the mean of its divisors is an integer number (5945883204800).

Almost surely, 2^{122020122212121} is an apocalyptic number.

It is an amenable number.

122020122212121 is a deficient number, since it is larger than the sum of its proper divisors (68248140341479).

122020122212121 is a wasteful number, since it uses less digits than its factorization.

122020122212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6220645.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 122020122212121 its reverse (121212221020221), we get a palindrome (243232343232342).

The spelling of 122020122212121 in words is "one hundred twenty-two trillion, twenty billion, one hundred twenty-two million, two hundred twelve thousand, one hundred twenty-one".