30202123211 has 32 divisors (see below), whose sum is σ = 35059651200. Its totient is φ = 25769779200.

The previous prime is 30202123183. The next prime is 30202123241. The reversal of 30202123211 is 11232120203.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30202123211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30202123211.

It is not an unprimeable number, because it can be changed into a prime (30202123241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2964935 + ... + 2975103.

It is an arithmetic number, because the mean of its divisors is an integer number (1095614100).

Almost surely, 2^30202123211 is an apocalyptic number.

30202123211 is a deficient number, since it is larger than the sum of its proper divisors (4857527989).

30202123211 is a wasteful number, since it uses less digits than its factorization.

30202123211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10439.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 30202123211 its reverse (11232120203), we get a palindrome (41434243414).

The spelling of 30202123211 in words is "thirty billion, two hundred two million, one hundred twenty-three thousand, two hundred eleven".