20012111130 has 64 divisors (see below), whose sum is σ = 52546641408. Its totient is φ = 4837412160.

The previous prime is 20012111129. The next prime is 20012111173. The reversal of 20012111130 is 3111121002.

It is a Curzon 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, 27129 + ... + 201891.

It is an arithmetic number, because the mean of its divisors is an integer number (821041272).

Almost surely, 2^20012111130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20012111130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26273320704).

20012111130 is an abundant number, since it is smaller than the sum of its proper divisors (32534530278).

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

20012111130 is a wasteful number, since it uses less digits than its factorization.

20012111130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175131.

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

Adding to 20012111130 its reverse (3111121002), we get a palindrome (23123232132).

The spelling of 20012111130 in words is "twenty billion, twelve million, one hundred eleven thousand, one hundred thirty".