30202120021 has 8 divisors (see below), whose sum is σ = 30423562400. Its totient is φ = 29980737360.

The previous prime is 30202119979. The next prime is 30202120027. The reversal of 30202120021 is 12002120203.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30202120021 - 2¹¹ = 30202117973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30202119983 and 30202120010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30202120027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1795711 + ... + 1812451.

It is an arithmetic number, because the mean of its divisors is an integer number (3802945300).

Almost surely, 2^30202120021 is an apocalyptic number.

It is an amenable number.

30202120021 is a deficient number, since it is larger than the sum of its proper divisors (221442379).

30202120021 is a wasteful number, since it uses less digits than its factorization.

30202120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29859.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 30202120021 its reverse (12002120203), we get a palindrome (42204240224).

The spelling of 30202120021 in words is "thirty billion, two hundred two million, one hundred twenty thousand, twenty-one".