102013232000021 has 4 divisors (see below), whose sum is σ = 102055861852812. Its totient is φ = 101970602147232.

The previous prime is 102013231999957. The next prime is 102013232000077. The reversal of 102013232000021 is 120000232310201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35061071295121 + 66952160704900 = 5921239^2 + 8182430^2 .

It is a cyclic number.

It is not a de Polignac number, because 102013232000021 - 2⁶ = 102013231999957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102013232000521) 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, 21314922806 + ... + 21314927591.

It is an arithmetic number, because the mean of its divisors is an integer number (25513965463203).

Almost surely, 2^{102013232000021} is an apocalyptic number.

It is an amenable number.

102013232000021 is a deficient number, since it is larger than the sum of its proper divisors (42629852791).

102013232000021 is an equidigital number, since it uses as much as digits as its factorization.

102013232000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42629852790.

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

Adding to 102013232000021 its reverse (120000232310201), we get a palindrome (222013464310222).

The spelling of 102013232000021 in words is "one hundred two trillion, thirteen billion, two hundred thirty-two million, twenty-one", and thus it is an aban number.