20012120110 has 16 divisors (see below), whose sum is σ = 36035171856. Its totient is φ = 8001880128.

The previous prime is 20012120099. The next prime is 20012120207. The reversal of 20012120110 is 1102121002.

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, 342567 + ... + 396706.

It is an arithmetic number, because the mean of its divisors is an integer number (2252198241).

Almost surely, 2^20012120110 is an apocalyptic number.

20012120110 is a deficient number, since it is larger than the sum of its proper divisors (16023051746).

20012120110 is a wasteful number, since it uses less digits than its factorization.

20012120110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741987.

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

Adding to 20012120110 its reverse (1102121002), we get a palindrome (21114241112).

The spelling of 20012120110 in words is "twenty billion, twelve million, one hundred twenty thousand, one hundred ten".