30231002200021 has 4 divisors (see below), whose sum is σ = 34549716800032. Its totient is φ = 25912287600012.

The previous prime is 30231002199991. The next prime is 30231002200093. The reversal of 30231002200021 is 12000220013203.

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 30231002200021 - 2¹¹ = 30231002197973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30231002199968 and 30231002200004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30231002000021) 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, 2159357299995 + ... + 2159357300008.

It is an arithmetic number, because the mean of its divisors is an integer number (8637429200008).

Almost surely, 2^{30231002200021} is an apocalyptic number.

It is an amenable number.

30231002200021 is a deficient number, since it is larger than the sum of its proper divisors (4318714600011).

30231002200021 is an equidigital number, since it uses as much as digits as its factorization.

30231002200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4318714600010.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 30231002200021 its reverse (12000220013203), we get a palindrome (42231222213224).

The spelling of 30231002200021 in words is "thirty trillion, two hundred thirty-one billion, two million, two hundred thousand, twenty-one".