20110634220 has 96 divisors (see below), whose sum is σ = 57137472000. Its totient is φ = 5284154880.

The previous prime is 20110634209. The next prime is 20110634233. The reversal of 20110634220 is 2243601102.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6704281 + ... + 6707279.

It is an arithmetic number, because the mean of its divisors is an integer number (595182000).

Almost surely, 2^20110634220 is an apocalyptic number.

20110634220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20110634220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28568736000).

20110634220 is an abundant number, since it is smaller than the sum of its proper divisors (37026837780).

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

20110634220 is a wasteful number, since it uses less digits than its factorization.

20110634220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4615 (or 4613 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The spelling of 20110634220 in words is "twenty billion, one hundred ten million, six hundred thirty-four thousand, two hundred twenty".