20021012110 has 24 divisors (see below), whose sum is σ = 39611823048. Its totient is φ = 7280367600.

The previous prime is 20021012059. The next prime is 20021012161. The reversal of 20021012110 is 1121012002.

It is an interprime number because it is at equal distance from previous prime (20021012059) and next prime (20021012161).

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 11 ways as a sum of consecutive naturals, for example, 8271936 + ... + 8274355.

It is an arithmetic number, because the mean of its divisors is an integer number (1650492627).

Almost surely, 2^20021012110 is an apocalyptic number.

20021012110 is a deficient number, since it is larger than the sum of its proper divisors (19590810938).

20021012110 is a wasteful number, since it uses less digits than its factorization.

20021012110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16546320 (or 16546309 counting only the distinct ones).

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

Adding to 20021012110 its reverse (1121012002), we get a palindrome (21142024112).

The spelling of 20021012110 in words is "twenty billion, twenty-one million, twelve thousand, one hundred ten".