202011022012121 has 4 divisors (see below), whose sum is σ = 230869739442432. Its totient is φ = 173152304581812.

The previous prime is 202011022012067. The next prime is 202011022012157. The reversal of 202011022012121 is 121210220110202.

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 202011022012121 - 2²⁶ = 202010954903257 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 202011022012121.

It is not an unprimeable number, because it can be changed into a prime (202011022012021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14429358715145 + ... + 14429358715158.

It is an arithmetic number, because the mean of its divisors is an integer number (57717434860608).

Almost surely, 2^{202011022012121} is an apocalyptic number.

It is an amenable number.

202011022012121 is a deficient number, since it is larger than the sum of its proper divisors (28858717430311).

202011022012121 is an equidigital number, since it uses as much as digits as its factorization.

202011022012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28858717430310.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 202011022012121 its reverse (121210220110202), we get a palindrome (323221242122323).

The spelling of 202011022012121 in words is "two hundred two trillion, eleven billion, twenty-two million, twelve thousand, one hundred twenty-one".