20320620244212 has 24 divisors (see below), whose sum is σ = 47509044561216. Its totient is φ = 6760073796928.

The previous prime is 20320620244201. The next prime is 20320620244219. The reversal of 20320620244212 is 21244202602302.

It is a self number, because there is not a number n which added to its sum of digits gives 20320620244212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20320620244219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1683279273 + ... + 1683291344.

It is an arithmetic number, because the mean of its divisors is an integer number (1979543523384).

Almost surely, 2^{20320620244212} is an apocalyptic number.

It is an amenable number.

20320620244212 is an abundant number, since it is smaller than the sum of its proper divisors (27188424317004).

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

20320620244212 is a wasteful number, since it uses less digits than its factorization.

20320620244212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3366571127 (or 3366571125 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 20320620244212 its reverse (21244202602302), we get a palindrome (41564822846514).

The spelling of 20320620244212 in words is "twenty trillion, three hundred twenty billion, six hundred twenty million, two hundred forty-four thousand, two hundred twelve".