122221110012021 has 10 divisors (see below), whose sum is σ = 182577213721782. Its totient is φ = 81480740007960.

The previous prime is 122221110011971. The next prime is 122221110012037. The reversal of 122221110012021 is 120210011122221.

It can be written as a sum of positive squares in only one way, i.e., 121949836748100 + 271273263921 = 11043090^2 + 520839^2 .

It is not a de Polignac number, because 122221110012021 - 2⁷ = 122221110011893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122221110011985 and 122221110012003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122221110012091) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 754451296290 + ... + 754451296451.

Almost surely, 2^{122221110012021} is an apocalyptic number.

It is an amenable number.

122221110012021 is a deficient number, since it is larger than the sum of its proper divisors (60356103709761).

122221110012021 is an equidigital number, since it uses as much as digits as its factorization.

122221110012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508902592753 (or 1508902592744 counting only the distinct ones).

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

Adding to 122221110012021 its reverse (120210011122221), we get a palindrome (242431121134242).

The spelling of 122221110012021 in words is "one hundred twenty-two trillion, two hundred twenty-one billion, one hundred ten million, twelve thousand, twenty-one".