202101020230121 has 16 divisors (see below), whose sum is σ = 205458468398784. Its totient is φ = 198753717501504.

The previous prime is 202101020230117. The next prime is 202101020230141. The reversal of 202101020230121 is 121032020101202.

It is a cyclic number.

It is not a de Polignac number, because 202101020230121 - 2² = 202101020230117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202101020230121.

It is not an unprimeable number, because it can be changed into a prime (202101020230141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231893651 + ... + 232763543.

It is an arithmetic number, because the mean of its divisors is an integer number (12841154274924).

Almost surely, 2^{202101020230121} is an apocalyptic number.

It is an amenable number.

202101020230121 is a deficient number, since it is larger than the sum of its proper divisors (3357448168663).

202101020230121 is an equidigital number, since it uses as much as digits as its factorization.

202101020230121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875720.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 202101020230121 its reverse (121032020101202), we get a palindrome (323133040331323).

The spelling of 202101020230121 in words is "two hundred two trillion, one hundred one billion, twenty million, two hundred thirty thousand, one hundred twenty-one".