102011300021 has 4 divisors (see below), whose sum is σ = 102339310944. Its totient is φ = 101683289100.

The previous prime is 102011300009. The next prime is 102011300023. The reversal of 102011300021 is 120003110201.

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 102011300021 - 2¹⁴ = 102011283637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102011299975 and 102011300011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102011300023) 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, 164004995 + ... + 164005616.

It is an arithmetic number, because the mean of its divisors is an integer number (25584827736).

Almost surely, 2^102011300021 is an apocalyptic number.

It is an amenable number.

102011300021 is a deficient number, since it is larger than the sum of its proper divisors (328010923).

102011300021 is an equidigital number, since it uses as much as digits as its factorization.

102011300021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328010922.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 102011300021 its reverse (120003110201), we get a palindrome (222014410222).

The spelling of 102011300021 in words is "one hundred two billion, eleven million, three hundred thousand, twenty-one".