20210021001200 has 60 divisors (see below), whose sum is σ = 49683751671048. Its totient is φ = 7896008198400.

The previous prime is 20210021001167. The next prime is 20210021001227. The reversal of 20210021001200 is 210012001202.

It is a happy number.

It is a congruent 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, 587483411 + ... + 587517810.

Almost surely, 2^{20210021001200} is an apocalyptic number.

20210021001200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20210021001200 is an abundant number, since it is smaller than the sum of its proper divisors (29473730669848).

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

20210021001200 is a wasteful number, since it uses less digits than its factorization.

20210021001200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175001282 (or 1175001271 counting only the distinct ones).

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

Adding to 20210021001200 its reverse (210012001202), we get a palindrome (20420033002402).

The spelling of 20210021001200 in words is "twenty trillion, two hundred ten billion, twenty-one million, one thousand, two hundred".