30212310303021 has 96 divisors (see below), whose sum is σ = 52825297674240. Its totient is φ = 15006185821440.

The previous prime is 30212310302789. The next prime is 30212310303083. The reversal of 30212310303021 is 12030301321203.

It is not a de Polignac number, because 30212310303021 - 2¹¹ = 30212310300973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30212310303421) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 144425020 + ... + 144634058.

It is an arithmetic number, because the mean of its divisors is an integer number (550263517440).

Almost surely, 2^{30212310303021} is an apocalyptic number.

It is an amenable number.

30212310303021 is a deficient number, since it is larger than the sum of its proper divisors (22612987371219).

30212310303021 is a wasteful number, since it uses less digits than its factorization.

30212310303021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211567 (or 211556 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 30212310303021 its reverse (12030301321203), we get a palindrome (42242611624224).

The spelling of 30212310303021 in words is "thirty trillion, two hundred twelve billion, three hundred ten million, three hundred three thousand, twenty-one".