122031120213 has 128 divisors (see below), whose sum is σ = 198383178240. Its totient is φ = 73853337600.

The previous prime is 122031120209. The next prime is 122031120223. The reversal of 122031120213 is 312021130221.

122031120213 is a `hidden beast` number, since 122 + 0 + 311 + 20 + 213 = 666.

It is not a de Polignac number, because 122031120213 - 2² = 122031120209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122031120223) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 362109981 + ... + 362110317.

It is an arithmetic number, because the mean of its divisors is an integer number (1549868580).

Almost surely, 2^122031120213 is an apocalyptic number.

It is an amenable number.

122031120213 is a deficient number, since it is larger than the sum of its proper divisors (76352058027).

122031120213 is a wasteful number, since it uses less digits than its factorization.

122031120213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644 (or 638 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 122031120213 its reverse (312021130221), we get a palindrome (434052250434).

The spelling of 122031120213 in words is "one hundred twenty-two billion, thirty-one million, one hundred twenty thousand, two hundred thirteen".