121012210012021 has 4 divisors (see below), whose sum is σ = 121292980801344. Its totient is φ = 120731439222700.

The previous prime is 121012210012007. The next prime is 121012210012037. The reversal of 121012210012021 is 120210012210121.

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 121012210012021 - 2²⁵ = 121012176457589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121012210011986 and 121012210012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121012210012091) 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, 140385394015 + ... + 140385394876.

It is an arithmetic number, because the mean of its divisors is an integer number (30323245200336).

Almost surely, 2^{121012210012021} is an apocalyptic number.

It is an amenable number.

121012210012021 is a deficient number, since it is larger than the sum of its proper divisors (280770789323).

121012210012021 is an equidigital number, since it uses as much as digits as its factorization.

121012210012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280770789322.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121012210012021 its reverse (120210012210121), we get a palindrome (241222222222142).

The spelling of 121012210012021 in words is "one hundred twenty-one trillion, twelve billion, two hundred ten million, twelve thousand, twenty-one".