21030131222212 has 96 divisors (see below), whose sum is σ = 42606754089984. Its totient is φ = 8896390272000.

The previous prime is 21030131222201. The next prime is 21030131222311. The reversal of 21030131222212 is 21222213103012.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1588251912 + ... + 1588265152.

It is an arithmetic number, because the mean of its divisors is an integer number (443820355104).

Almost surely, 2^{21030131222212} is an apocalyptic number.

It is an amenable number.

21030131222212 is an abundant number, since it is smaller than the sum of its proper divisors (21576622867772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21030131222212 is a wasteful number, since it uses less digits than its factorization.

21030131222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15029 (or 15027 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21030131222212 its reverse (21222213103012), we get a palindrome (42252344325224).

The spelling of 21030131222212 in words is "twenty-one trillion, thirty billion, one hundred thirty-one million, two hundred twenty-two thousand, two hundred twelve".