20002121112200 has 48 divisors (see below), whose sum is σ = 46505350894500. Its totient is φ = 8000776305920.

The previous prime is 20002121112173. The next prime is 20002121112343. The reversal of 20002121112200 is 221112120002.

It can be written as a sum of positive squares in 6 ways, for example, as 13732375541284 + 6269745570916 = 3705722^2 + 2503946^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25515686 + ... + 26287914.

Almost surely, 2^{20002121112200} is an apocalyptic number.

20002121112200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20002121112200 is an abundant number, since it is smaller than the sum of its proper divisors (26503229782300).

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

20002121112200 is a wasteful number, since it uses less digits than its factorization.

20002121112200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901754 (or 901745 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20002121112200 its reverse (221112120002), we get a palindrome (20223233232202).

The spelling of 20002121112200 in words is "twenty trillion, two billion, one hundred twenty-one million, one hundred twelve thousand, two hundred".