20120021110 has 16 divisors (see below), whose sum is σ = 41389757856. Its totient is φ = 6898292928.

The previous prime is 20120021107. The next prime is 20120021137. The reversal of 20120021110 is 1112002102.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143714367 + ... + 143714506.

It is an arithmetic number, because the mean of its divisors is an integer number (2586859866).

Almost surely, 2^20120021110 is an apocalyptic number.

20120021110 is an abundant number, since it is smaller than the sum of its proper divisors (21269736746).

20120021110 is a wasteful number, since it uses less digits than its factorization.

20120021110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287428887.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20120021110 its reverse (1112002102), we get a palindrome (21232023212).

The spelling of 20120021110 in words is "twenty billion, one hundred twenty million, twenty-one thousand, one hundred ten".