30202013223021 has 4 divisors (see below), whose sum is σ = 40269350964032. Its totient is φ = 20134675482012.

The previous prime is 30202013223007. The next prime is 30202013223043. The reversal of 30202013223021 is 12032231020203.

It is a happy number.

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 not a de Polignac number, because 30202013223021 - 2⁹ = 30202013222509 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 (30202012223021) 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, 5033668870501 + ... + 5033668870506.

It is an arithmetic number, because the mean of its divisors is an integer number (10067337741008).

Almost surely, 2^{30202013223021} is an apocalyptic number.

It is an amenable number.

30202013223021 is a deficient number, since it is larger than the sum of its proper divisors (10067337741011).

30202013223021 is a wasteful number, since it uses less digits than its factorization.

30202013223021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10067337741010.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 30202013223021 its reverse (12032231020203), we get a palindrome (42234244243224).

The spelling of 30202013223021 in words is "thirty trillion, two hundred two billion, thirteen million, two hundred twenty-three thousand, twenty-one".