2021021200090 has 64 divisors (see below), whose sum is σ = 3782268172800. Its totient is φ = 776599294464.

The previous prime is 2021021200073. The next prime is 2021021200109. The reversal of 2021021200090 is 900021201202.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96141601 + ... + 96162619.

It is an arithmetic number, because the mean of its divisors is an integer number (59097940200).

Almost surely, 2^{2021021200090} is an apocalyptic number.

2021021200090 is a deficient number, since it is larger than the sum of its proper divisors (1761246972710).

2021021200090 is a wasteful number, since it uses less digits than its factorization.

2021021200090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22711.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 2021021200090 its reverse (900021201202), we get a palindrome (2921042401292).

The spelling of 2021021200090 in words is "two trillion, twenty-one billion, twenty-one million, two hundred thousand, ninety".