102021310213 has 4 divisors (see below), whose sum is σ = 102036564448. Its totient is φ = 102006055980.

The previous prime is 102021310133. The next prime is 102021310229. The reversal of 102021310213 is 312013120201.

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, and also an emirpimes, since its reverse is a distinct semiprime: 312013120201 = 17 ⋅18353712953.

It is a cyclic number.

It is not a de Polignac number, because 102021310213 - 2⁹ = 102021309701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021310613) 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, 7617081 + ... + 7630462.

It is an arithmetic number, because the mean of its divisors is an integer number (25509141112).

Almost surely, 2^102021310213 is an apocalyptic number.

It is an amenable number.

102021310213 is a deficient number, since it is larger than the sum of its proper divisors (15254235).

102021310213 is an equidigital number, since it uses as much as digits as its factorization.

102021310213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15254234.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 102021310213 its reverse (312013120201), we get a palindrome (414034430414).

The spelling of 102021310213 in words is "one hundred two billion, twenty-one million, three hundred ten thousand, two hundred thirteen".