20102111100099 has 64 divisors (see below), whose sum is σ = 35210115072000. Its totient is φ = 11090453592960.

The previous prime is 20102111100091. The next prime is 20102111100173. The reversal of 20102111100099 is 99000111120102.

It is not a de Polignac number, because 20102111100099 - 2³ = 20102111100091 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20102111100091) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 326138014 + ... + 326199644.

It is an arithmetic number, because the mean of its divisors is an integer number (550158048000).

Almost surely, 2^{20102111100099} is an apocalyptic number.

20102111100099 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

20102111100099 is a deficient number, since it is larger than the sum of its proper divisors (15108003971901).

20102111100099 is a wasteful number, since it uses less digits than its factorization.

20102111100099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121185 (or 121179 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 27.

The spelling of 20102111100099 in words is "twenty trillion, one hundred two billion, one hundred eleven million, one hundred thousand, ninety-nine".