30202103231021 has 4 divisors (see below), whose sum is σ = 30204474081600. Its totient is φ = 30199732380444.

The previous prime is 30202103231009. The next prime is 30202103231023. The reversal of 30202103231021 is 12013230120203.

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 30202103231021 - 2²² = 30202099036717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30202103230984 and 30202103231002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30202103231023) 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, 1185406181 + ... + 1185431658.

It is an arithmetic number, because the mean of its divisors is an integer number (7551118520400).

Almost surely, 2^{30202103231021} is an apocalyptic number.

It is an amenable number.

30202103231021 is a deficient number, since it is larger than the sum of its proper divisors (2370850579).

30202103231021 is a wasteful number, since it uses less digits than its factorization.

30202103231021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2370850578.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 30202103231021 its reverse (12013230120203), we get a palindrome (42215333351224).

The spelling of 30202103231021 in words is "thirty trillion, two hundred two billion, one hundred three million, two hundred thirty-one thousand, twenty-one".