20213131233212 has 12 divisors (see below), whose sum is σ = 35373732715776. Its totient is φ = 10106350457280.

The previous prime is 20213131233193. The next prime is 20213131233247. The reversal of 20213131233212 is 21233213131202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53578364 + ... + 53954307.

It is an arithmetic number, because the mean of its divisors is an integer number (2947811059648).

Almost surely, 2^{20213131233212} is an apocalyptic number.

It is an amenable number.

20213131233212 is a deficient number, since it is larger than the sum of its proper divisors (15160601482564).

20213131233212 is a wasteful number, since it uses less digits than its factorization.

20213131233212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107579668 (or 107579666 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 20213131233212 its reverse (21233213131202), we get a palindrome (41446344364414).

The spelling of 20213131233212 in words is "twenty trillion, two hundred thirteen billion, one hundred thirty-one million, two hundred thirty-three thousand, two hundred twelve".