122001220121211 has 20 divisors (see below), whose sum is σ = 182530419054192. Its totient is φ = 81208437057648.

The previous prime is 122001220121189. The next prime is 122001220121237. The reversal of 122001220121211 is 112121022100221.

122001220121211 is a `hidden beast` number, since 1 + 220 + 0 + 1 + 220 + 1 + 212 + 11 = 666.

It is not a de Polignac number, because 122001220121211 - 2⁷ = 122001220121083 is a prime.

It is a super-2 number, since 2×122001220121211² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122001220129211) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1163925880 + ... + 1164030693.

Almost surely, 2^{122001220121211} is an apocalyptic number.

122001220121211 is a deficient number, since it is larger than the sum of its proper divisors (60529198932981).

122001220121211 is an equidigital number, since it uses as much as digits as its factorization.

122001220121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2327957232 (or 2327957223 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 122001220121211 its reverse (112121022100221), we get a palindrome (234122242221432).

The spelling of 122001220121211 in words is "one hundred twenty-two trillion, one billion, two hundred twenty million, one hundred twenty-one thousand, two hundred eleven".