122000020121 has 6 divisors (see below), whose sum is σ = 141918390810. Its totient is φ = 104571445776.

The previous prime is 122000020111. The next prime is 122000020133. The reversal of 122000020121 is 121020000221.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 73949188096 + 48050832025 = 271936^2 + 219205^2 .

It is not a de Polignac number, because 122000020121 - 2¹⁴ = 122000003737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122000020111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1244898116 + ... + 1244898213.

It is an arithmetic number, because the mean of its divisors is an integer number (23653065135).

Almost surely, 2^122000020121 is an apocalyptic number.

It is an amenable number.

122000020121 is a deficient number, since it is larger than the sum of its proper divisors (19918370689).

122000020121 is an equidigital number, since it uses as much as digits as its factorization.

122000020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2489796343 (or 2489796336 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 122000020121 its reverse (121020000221), we get a palindrome (243020020342).

The spelling of 122000020121 in words is "one hundred twenty-two billion, twenty thousand, one hundred twenty-one".