30010102021 has 4 divisors (see below), whose sum is σ = 30017558272. Its totient is φ = 30002645772.

The previous prime is 30010102013. The next prime is 30010102027. The reversal of 30010102021 is 12020101003.

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 30010102021 - 2³ = 30010102013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30010101989 and 30010102007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30010102027) 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, 3722085 + ... + 3730138.

It is an arithmetic number, because the mean of its divisors is an integer number (7504389568).

Almost surely, 2^30010102021 is an apocalyptic number.

It is an amenable number.

30010102021 is a deficient number, since it is larger than the sum of its proper divisors (7456251).

30010102021 is an equidigital number, since it uses as much as digits as its factorization.

30010102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7456250.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 30010102021 its reverse (12020101003), we get a palindrome (42030203024).

The spelling of 30010102021 in words is "thirty billion, ten million, one hundred two thousand, twenty-one".