20201131110 has 64 divisors (see below), whose sum is σ = 51502252032. Its totient is φ = 5053533696.

The previous prime is 20201131103. The next prime is 20201131123. The reversal of 20201131110 is 1113110202.

It is a congruent number.

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, 92059 + ... + 221081.

It is an arithmetic number, because the mean of its divisors is an integer number (804722688).

Almost surely, 2^20201131110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20201131110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25751126016).

20201131110 is an abundant number, since it is smaller than the sum of its proper divisors (31301120922).

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

20201131110 is a wasteful number, since it uses less digits than its factorization.

20201131110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129357.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 20201131110 its reverse (1113110202), we get a palindrome (21314241312).

The spelling of 20201131110 in words is "twenty billion, two hundred one million, one hundred thirty-one thousand, one hundred ten".