202010021200121 has 4 divisors (see below), whose sum is σ = 202010078174544. Its totient is φ = 202009964225700.

The previous prime is 202010021200109. The next prime is 202010021200181. The reversal of 202010021200121 is 121002120010202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 202010021200121 - 2¹⁰ = 202010021199097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202010021200096 and 202010021200105.

It is not an unprimeable number, because it can be changed into a prime (202010021200181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22788815 + ... + 30386676.

It is an arithmetic number, because the mean of its divisors is an integer number (50502519543636).

Almost surely, 2^{202010021200121} is an apocalyptic number.

It is an amenable number.

202010021200121 is a deficient number, since it is larger than the sum of its proper divisors (56974423).

202010021200121 is an equidigital number, since it uses as much as digits as its factorization.

202010021200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56974422.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 202010021200121 its reverse (121002120010202), we get a palindrome (323012141210323).

The spelling of 202010021200121 in words is "two hundred two trillion, ten billion, twenty-one million, two hundred thousand, one hundred twenty-one".