231220020202212 has 24 divisors (see below), whose sum is σ = 539553827159200. Its totient is φ = 77067561969216.

The previous prime is 231220020202207. The next prime is 231220020202229. The reversal of 231220020202212 is 212202020022132.

It is a super-2 number, since 2×231220020202212² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 722095537 + ... + 722415672.

Almost surely, 2^{231220020202212} is an apocalyptic number.

It is an amenable number.

231220020202212 is an abundant number, since it is smaller than the sum of its proper divisors (308333806956988).

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

231220020202212 is a wasteful number, since it uses less digits than its factorization.

231220020202212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444524555 (or 1444524553 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 231220020202212 its reverse (212202020022132), we get a palindrome (443422040224344).

The spelling of 231220020202212 in words is "two hundred thirty-one trillion, two hundred twenty billion, twenty million, two hundred two thousand, two hundred twelve".