20939226112 has 88 divisors (see below), whose sum is σ = 49005180000. Its totient is φ = 8754954240.

The previous prime is 20939226109. The next prime is 20939226163. The reversal of 20939226112 is 21162293902.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258264 + ... + 329512.

Almost surely, 2^20939226112 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 20939226112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24502590000).

20939226112 is an abundant number, since it is smaller than the sum of its proper divisors (28065953888).

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

20939226112 is an equidigital number, since it uses as much as digits as its factorization.

20939226112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71317 (or 71299 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The spelling of 20939226112 in words is "twenty billion, nine hundred thirty-nine million, two hundred twenty-six thousand, one hundred twelve".