202412234021 has 4 divisors (see below), whose sum is σ = 203752712544. Its totient is φ = 201071755500.

The previous prime is 202412233979. The next prime is 202412234027. The reversal of 202412234021 is 120432214202.

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 202412234021 - 2³⁰ = 201338492197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202412234027) 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, 670239035 + ... + 670239336.

It is an arithmetic number, because the mean of its divisors is an integer number (50938178136).

Almost surely, 2^202412234021 is an apocalyptic number.

It is an amenable number.

202412234021 is a deficient number, since it is larger than the sum of its proper divisors (1340478523).

202412234021 is a wasteful number, since it uses less digits than its factorization.

202412234021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340478522.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 202412234021 its reverse (120432214202), we get a palindrome (322844448223).

The spelling of 202412234021 in words is "two hundred two billion, four hundred twelve million, two hundred thirty-four thousand, twenty-one".