30101010021 has 16 divisors (see below), whose sum is σ = 44599816320. Its totient is φ = 20064762720.

The previous prime is 30101009963. The next prime is 30101010109. The reversal of 30101010021 is 12001010103.

It is not a de Polignac number, because 30101010021 - 2²¹ = 30098912869 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 30101009985 and 30101010012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30101018021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155641 + ... + 290561.

It is an arithmetic number, because the mean of its divisors is an integer number (2787488520).

Almost surely, 2^30101010021 is an apocalyptic number.

It is an amenable number.

30101010021 is a deficient number, since it is larger than the sum of its proper divisors (14498806299).

30101010021 is a wasteful number, since it uses less digits than its factorization.

30101010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143193 (or 143187 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

Adding to 30101010021 its reverse (12001010103), we get a palindrome (42102020124).

The spelling of 30101010021 in words is "thirty billion, one hundred one million, ten thousand, twenty-one".