20102111122100 has 36 divisors (see below), whose sum is σ = 49853235584544. Its totient is φ = 6892152384480.

The previous prime is 20102111122099. The next prime is 20102111122109. The reversal of 20102111122100 is 122111120102.

It is a super-2 number, since 2×20102111122100² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102111122109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14358650102 + ... + 14358651501.

Almost surely, 2^{20102111122100} is an apocalyptic number.

20102111122100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20102111122100 is an abundant number, since it is smaller than the sum of its proper divisors (29751124462444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20102111122100 is a wasteful number, since it uses less digits than its factorization.

20102111122100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28717301624 (or 28717301617 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20102111122100 its reverse (122111120102), we get a palindrome (20224222242202).

The spelling of 20102111122100 in words is "twenty trillion, one hundred two billion, one hundred eleven million, one hundred twenty-two thousand, one hundred".