102311020201 has 4 divisors (see below), whose sum is σ = 110181098692. Its totient is φ = 94440941712.

The previous prime is 102311020181. The next prime is 102311020211. The reversal of 102311020201 is 102020113201.

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 37744718400 + 64566301801 = 194280^2 + 254099^2 .

It is not a de Polignac number, because 102311020201 - 2²⁵ = 102277465769 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 7870078477 = 102311020201 / (1 + 0 + 2 + 3 + 1 + 1 + 0 + 2 + 0 + 2 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102311020211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3935039226 + ... + 3935039251.

It is an arithmetic number, because the mean of its divisors is an integer number (27545274673).

Almost surely, 2^102311020201 is an apocalyptic number.

It is an amenable number.

102311020201 is a deficient number, since it is larger than the sum of its proper divisors (7870078491).

102311020201 is an equidigital number, since it uses as much as digits as its factorization.

102311020201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7870078490.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 102311020201 its reverse (102020113201), we get a palindrome (204331133402).

The spelling of 102311020201 in words is "one hundred two billion, three hundred eleven million, twenty thousand, two hundred one".