102013030021 has 16 divisors (see below), whose sum is σ = 119792725888. Its totient is φ = 85051814400.

The previous prime is 102013029997. The next prime is 102013030027. The reversal of 102013030021 is 120030310201.

It is a de Polignac number, because none of the positive numbers 2^k-102013030021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102013029983 and 102013030010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102013030027) 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, 630600 + ... + 775681.

It is an arithmetic number, because the mean of its divisors is an integer number (7487045368).

Almost surely, 2^102013030021 is an apocalyptic number.

It is an amenable number.

102013030021 is a deficient number, since it is larger than the sum of its proper divisors (17779695867).

102013030021 is a wasteful number, since it uses less digits than its factorization.

102013030021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1406572.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 102013030021 its reverse (120030310201), we get a palindrome (222043340222).

The spelling of 102013030021 in words is "one hundred two billion, thirteen million, thirty thousand, twenty-one".