302020140021 has 4 divisors (see below), whose sum is σ = 402693520032. Its totient is φ = 201346760012.

The previous prime is 302020139999. The next prime is 302020140029. The reversal of 302020140021 is 120041020203.

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 302020140021 - 2⁷ = 302020139893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (302020140029) 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, 50336690001 + ... + 50336690006.

It is an arithmetic number, because the mean of its divisors is an integer number (100673380008).

Almost surely, 2^302020140021 is an apocalyptic number.

It is an amenable number.

302020140021 is a deficient number, since it is larger than the sum of its proper divisors (100673380011).

302020140021 is a wasteful number, since it uses less digits than its factorization.

302020140021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100673380010.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 302020140021 its reverse (120041020203), we get a palindrome (422061160224).

The spelling of 302020140021 in words is "three hundred two billion, twenty million, one hundred forty thousand, twenty-one".