202001022021021 has 8 divisors (see below), whose sum is σ = 269724471278304. Its totient is φ = 134472460388880.

The previous prime is 202001022021017. The next prime is 202001022021053. The reversal of 202001022021021 is 120120220100202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 202001022021021 - 2² = 202001022021017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202001022001021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48721903866 + ... + 48721908011.

It is an arithmetic number, because the mean of its divisors is an integer number (33715558909788).

Almost surely, 2^{202001022021021} is an apocalyptic number.

It is an amenable number.

202001022021021 is a deficient number, since it is larger than the sum of its proper divisors (67723449257283).

202001022021021 is an equidigital number, since it uses as much as digits as its factorization.

202001022021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97443812571.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 202001022021021 its reverse (120120220100202), we get a palindrome (322121242121223).

The spelling of 202001022021021 in words is "two hundred two trillion, one billion, twenty-two million, twenty-one thousand, twenty-one".