2421214012121 has 4 divisors (see below), whose sum is σ = 2504704150500. Its totient is φ = 2337723873744.

The previous prime is 2421214012117. The next prime is 2421214012163. The reversal of 2421214012121 is 1212104121242.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 963734890000 + 1457479122121 = 981700^2 + 1207261^2 .

It is a cyclic number.

It is not a de Polignac number, because 2421214012121 - 2² = 2421214012117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2421214017121) 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, 41745069146 + ... + 41745069203.

It is an arithmetic number, because the mean of its divisors is an integer number (626176037625).

Almost surely, 2^{2421214012121} is an apocalyptic number.

It is an amenable number.

2421214012121 is a deficient number, since it is larger than the sum of its proper divisors (83490138379).

2421214012121 is an equidigital number, since it uses as much as digits as its factorization.

2421214012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83490138378.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 2421214012121 its reverse (1212104121242), we get a palindrome (3633318133363).

The spelling of 2421214012121 in words is "two trillion, four hundred twenty-one billion, two hundred fourteen million, twelve thousand, one hundred twenty-one".