202121000121021 has 8 divisors (see below), whose sum is σ = 269608329708384. Its totient is φ = 134690501973840.

The previous prime is 202121000121013. The next prime is 202121000121041. The reversal of 202121000121021 is 120121000121202.

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

It is not a de Polignac number, because 202121000121021 - 2³ = 202121000121013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202121000121041) 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, 14207851746 + ... + 14207865971.

It is an arithmetic number, because the mean of its divisors is an integer number (33701041213548).

Almost surely, 2^{202121000121021} is an apocalyptic number.

It is an amenable number.

202121000121021 is a deficient number, since it is larger than the sum of its proper divisors (67487329587363).

202121000121021 is a wasteful number, since it uses less digits than its factorization.

202121000121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28415720091.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 202121000121021 its reverse (120121000121202), we get a palindrome (322242000242223).

The spelling of 202121000121021 in words is "two hundred two trillion, one hundred twenty-one billion, one hundred twenty-one thousand, twenty-one".