122640046221 has 96 divisors (see below), whose sum is σ = 209411985664. Its totient is φ = 62475494400.

The previous prime is 122640046211. The next prime is 122640046237.

122640046221 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 122640046221 - 2⁵ = 122640046189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122640046211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 61534401 + ... + 61536393.

Almost surely, 2^122640046221 is an apocalyptic number.

122640046221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122640046221 is a deficient number, since it is larger than the sum of its proper divisors (86771939443).

122640046221 is a wasteful number, since it uses less digits than its factorization.

122640046221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2483 (or 2472 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The spelling of 122640046221 in words is "one hundred twenty-two billion, six hundred forty million, forty-six thousand, two hundred twenty-one".