20121011110 has 16 divisors (see below), whose sum is σ = 37792508256. Its totient is φ = 7698473728.

The previous prime is 20121011083. The next prime is 20121011137. The reversal of 20121011110 is 1111012102.

It is an interprime number because it is at equal distance from previous prime (20121011083) and next prime (20121011137).

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, 43741099 + ... + 43741558.

It is an arithmetic number, because the mean of its divisors is an integer number (2362031766).

Almost surely, 2^20121011110 is an apocalyptic number.

20121011110 is a deficient number, since it is larger than the sum of its proper divisors (17671497146).

20121011110 is a wasteful number, since it uses less digits than its factorization.

20121011110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87482687.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 20121011110 its reverse (1111012102), we get a palindrome (21232023212).

The spelling of 20121011110 in words is "twenty billion, one hundred twenty-one million, eleven thousand, one hundred ten".