20321112310212 has 48 divisors (see below), whose sum is σ = 55077987477632. Its totient is φ = 5710851233280.

The previous prime is 20321112310193. The next prime is 20321112310231. The reversal of 20321112310212 is 21201321112302.

It is an interprime number because it is at equal distance from previous prime (20321112310193) and next prime (20321112310231).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1982929333 + ... + 1982939580.

Almost surely, 2^{20321112310212} is an apocalyptic number.

It is an amenable number.

20321112310212 is an abundant number, since it is smaller than the sum of its proper divisors (34756875167420).

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

20321112310212 is a wasteful number, since it uses less digits than its factorization.

20321112310212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3965868988 (or 3965868986 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 20321112310212 its reverse (21201321112302), we get a palindrome (41522433422514).

The spelling of 20321112310212 in words is "twenty trillion, three hundred twenty-one billion, one hundred twelve million, three hundred ten thousand, two hundred twelve".