20120202100100 has 36 divisors (see below), whose sum is σ = 43928696498064. Its totient is φ = 7998706104480.

The previous prime is 20120202100099. The next prime is 20120202100127. The reversal of 20120202100100 is 100120202102.

It is a happy number.

It is a super-3 number, since 3×20120202100100³ (a number of 41 digits) contains 333 as substring.

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, 617167814 + ... + 617200413.

Almost surely, 2^{20120202100100} is an apocalyptic number.

20120202100100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20120202100100 is an abundant number, since it is smaller than the sum of its proper divisors (23808494397964).

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

20120202100100 is a wasteful number, since it uses less digits than its factorization.

20120202100100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234368404 (or 1234368397 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20120202100100 its reverse (100120202102), we get a palindrome (20220322302202).

The spelling of 20120202100100 in words is "twenty trillion, one hundred twenty billion, two hundred two million, one hundred thousand, one hundred".