20110031042100 has 36 divisors (see below), whose sum is σ = 58185023149344. Its totient is φ = 5362674944480.

The previous prime is 20110031041979. The next prime is 20110031042111. The reversal of 20110031042100 is 124013001102.

It is a super-2 number, since 2×20110031042100² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20110031042100.

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, 33516718104 + ... + 33516718703.

Almost surely, 2^{20110031042100} is an apocalyptic number.

20110031042100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20110031042100 is an abundant number, since it is smaller than the sum of its proper divisors (38074992107244).

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

20110031042100 is a wasteful number, since it uses less digits than its factorization.

20110031042100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67033436824 (or 67033436817 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20110031042100 its reverse (124013001102), we get a palindrome (20234044043202).

The spelling of 20110031042100 in words is "twenty trillion, one hundred ten billion, thirty-one million, forty-two thousand, one hundred".