122011121011221 has 48 divisors (see below), whose sum is σ = 207183710027840. Its totient is φ = 71131989542400.

The previous prime is 122011121011189. The next prime is 122011121011229. The reversal of 122011121011221 is 122110121110221.

It is a happy number.

122011121011221 is a `hidden beast` number, since 1 + 220 + 1 + 1 + 1 + 210 + 11 + 221 = 666.

It is not a de Polignac number, because 122011121011221 - 2⁵ = 122011121011189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122011121011194 and 122011121011203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122011121011229) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1016343580 + ... + 1016463621.

Almost surely, 2^{122011121011221} is an apocalyptic number.

It is an amenable number.

122011121011221 is a deficient number, since it is larger than the sum of its proper divisors (85172589016619).

122011121011221 is a wasteful number, since it uses less digits than its factorization.

122011121011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032807248 (or 2032807236 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 122011121011221 its reverse (122110121110221), we get a palindrome (244121242121442).

The spelling of 122011121011221 in words is "one hundred twenty-two trillion, eleven billion, one hundred twenty-one million, eleven thousand, two hundred twenty-one".