202011012112121 has 4 divisors (see below), whose sum is σ = 202039759950672. Its totient is φ = 201982264273572.

The previous prime is 202011012112099. The next prime is 202011012112127. The reversal of 202011012112121 is 121211210110202.

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 202011012112121 - 2⁶ = 202011012112057 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 202011012112121.

It is not an unprimeable number, because it can be changed into a prime (202011012112127) 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, 14373908735 + ... + 14373922788.

It is an arithmetic number, because the mean of its divisors is an integer number (50509939987668).

Almost surely, 2^{202011012112121} is an apocalyptic number.

It is an amenable number.

202011012112121 is a deficient number, since it is larger than the sum of its proper divisors (28747838551).

202011012112121 is an equidigital number, since it uses as much as digits as its factorization.

202011012112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28747838550.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 202011012112121 its reverse (121211210110202), we get a palindrome (323222222222323).

The spelling of 202011012112121 in words is "two hundred two trillion, eleven billion, twelve million, one hundred twelve thousand, one hundred twenty-one".