20892202977212 has 96 divisors (see below), whose sum is σ = 42633307487232. Its totient is φ = 8772384531456.

The previous prime is 20892202977187. The next prime is 20892202977221. The reversal of 20892202977212 is 21277920229802.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4337179028 + ... + 4337183844.

It is an arithmetic number, because the mean of its divisors is an integer number (444096952992).

Almost surely, 2^{20892202977212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20892202977212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21316653743616).

20892202977212 is an abundant number, since it is smaller than the sum of its proper divisors (21741104510020).

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

20892202977212 is a wasteful number, since it uses less digits than its factorization.

20892202977212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8427 (or 8425 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 53.

The spelling of 20892202977212 in words is "twenty trillion, eight hundred ninety-two billion, two hundred two million, nine hundred seventy-seven thousand, two hundred twelve".