202000121100021 has 8 divisors (see below), whose sum is σ = 276612778443424. Its totient is φ = 131027105578320.

The previous prime is 202000121100013. The next prime is 202000121100067. The reversal of 202000121100021 is 120001121000202.

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

It is not a de Polignac number, because 202000121100021 - 2³ = 202000121100013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202000121100721) 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, 909910455295 + ... + 909910455516.

It is an arithmetic number, because the mean of its divisors is an integer number (34576597305428).

Almost surely, 2^{202000121100021} is an apocalyptic number.

It is an amenable number.

202000121100021 is a deficient number, since it is larger than the sum of its proper divisors (74612657343403).

202000121100021 is a wasteful number, since it uses less digits than its factorization.

202000121100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819820910851.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 202000121100021 its reverse (120001121000202), we get a palindrome (322001242100223).

The spelling of 202000121100021 in words is "two hundred two trillion, one hundred twenty-one million, one hundred thousand, twenty-one".