20102210210100 has 72 divisors (see below), whose sum is σ = 59515008747040. Its totient is φ = 5235924516480.

The previous prime is 20102210210083. The next prime is 20102210210111. The reversal of 20102210210100 is 101201220102.

It is a super-2 number, since 2×20102210210100² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 779142535 + ... + 779168334.

Almost surely, 2^{20102210210100} is an apocalyptic number.

20102210210100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20102210210100 is an abundant number, since it is smaller than the sum of its proper divisors (39412798536940).

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

20102210210100 is a wasteful number, since it uses less digits than its factorization.

20102210210100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558310929 (or 1558310922 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20102210210100 its reverse (101201220102), we get a palindrome (20203411430202).

The spelling of 20102210210100 in words is "twenty trillion, one hundred two billion, two hundred ten million, two hundred ten thousand, one hundred".