202112130320021 has 8 divisors (see below), whose sum is σ = 212750750116800. Its totient is φ = 191473624448640.

The previous prime is 202112130320017. The next prime is 202112130320117. The reversal of 202112130320021 is 120023031211202.

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

It is a cyclic number.

It is not a de Polignac number, because 202112130320021 - 2² = 202112130320017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202112130319975 and 202112130320002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202112130320521) 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, 24827801 + ... + 31947518.

It is an arithmetic number, because the mean of its divisors is an integer number (26593843764600).

Almost surely, 2^{202112130320021} is an apocalyptic number.

It is an amenable number.

202112130320021 is a deficient number, since it is larger than the sum of its proper divisors (10638619796779).

202112130320021 is a wasteful number, since it uses less digits than its factorization.

202112130320021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56962699.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 202112130320021 its reverse (120023031211202), we get a palindrome (322135161531223).

The spelling of 202112130320021 in words is "two hundred two trillion, one hundred twelve billion, one hundred thirty million, three hundred twenty thousand, twenty-one".