20212121001200 has 60 divisors (see below), whose sum is σ = 48885524344200. Its totient is φ = 8030587649280.

The previous prime is 20212121001133. The next prime is 20212121001217. The reversal of 20212121001200 is 210012121202.

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 11 ways as a sum of consecutive naturals, for example, 169505174 + ... + 169624373.

It is an arithmetic number, because the mean of its divisors is an integer number (814758739070).

Almost surely, 2^{20212121001200} is an apocalyptic number.

20212121001200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20212121001200 is an abundant number, since it is smaller than the sum of its proper divisors (28673403343000).

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

20212121001200 is a wasteful number, since it uses less digits than its factorization.

20212121001200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339129714 (or 339129703 counting only the distinct ones).

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

Adding to 20212121001200 its reverse (210012121202), we get a palindrome (20422133122402).

The spelling of 20212121001200 in words is "twenty trillion, two hundred twelve billion, one hundred twenty-one million, one thousand, two hundred".