20200002121100 has 36 divisors (see below), whose sum is σ = 44008642126008. Its totient is φ = 8047809600000.

The previous prime is 20200002121069. The next prime is 20200002121133. The reversal of 20200002121100 is 112120000202.

It is a happy 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, 402365381 + ... + 402415580.

It is an arithmetic number, because the mean of its divisors is an integer number (1222462281278).

Almost surely, 2^{20200002121100} is an apocalyptic number.

20200002121100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20200002121100 is an abundant number, since it is smaller than the sum of its proper divisors (23808640004908).

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

20200002121100 is a wasteful number, since it uses less digits than its factorization.

20200002121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804781226 (or 804781219 counting only the distinct ones).

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

Adding to 20200002121100 its reverse (112120000202), we get a palindrome (20312122121302).

The spelling of 20200002121100 in words is "twenty trillion, two hundred billion, two million, one hundred twenty-one thousand, one hundred".