20112102021986 has 8 divisors (see below), whose sum is σ = 32488780189404. Its totient is φ = 9282508625520.

The previous prime is 20112102021983. The next prime is 20112102021989. The reversal of 20112102021986 is 68912020121102.

It is an interprime number because it is at equal distance from previous prime (20112102021983) and next prime (20112102021989).

It can be written as a sum of positive squares in 2 ways, for example, as 17343934806025 + 2768167215961 = 4164605^2 + 1663781^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20112102021983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386771192705 + ... + 386771192756.

Almost surely, 2^{20112102021986} is an apocalyptic number.

20112102021986 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20112102021986 is a deficient number, since it is larger than the sum of its proper divisors (12376678167418).

20112102021986 is a wasteful number, since it uses less digits than its factorization.

20112102021986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773542385476.

The product of its (nonzero) digits is 6912, while the sum is 35.

The spelling of 20112102021986 in words is "twenty trillion, one hundred twelve billion, one hundred two million, twenty-one thousand, nine hundred eighty-six".