202002012100021 has 8 divisors (see below), whose sum is σ = 230898419223104. Its totient is φ = 173115349182720.

The previous prime is 202002012099971. The next prime is 202002012100027. The reversal of 202002012100021 is 120001210200202.

It is a happy number.

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

It is not a de Polignac number, because 202002012100021 - 2¹⁵ = 202002012067253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202002012099974 and 202002012100010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202002012100027) 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, 2436007020 + ... + 2436089941.

It is an arithmetic number, because the mean of its divisors is an integer number (28862302402888).

Almost surely, 2^{202002012100021} is an apocalyptic number.

It is an amenable number.

202002012100021 is a deficient number, since it is larger than the sum of its proper divisors (28896407123083).

202002012100021 is an equidigital number, since it uses as much as digits as its factorization.

202002012100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4872102891.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 202002012100021 its reverse (120001210200202), we get a palindrome (322003222300223).

The spelling of 202002012100021 in words is "two hundred two trillion, two billion, twelve million, one hundred thousand, twenty-one".