102131133321 has 8 divisors (see below), whose sum is σ = 155628393664. Its totient is φ = 58360647600.

The previous prime is 102131133289. The next prime is 102131133347. The reversal of 102131133321 is 123331131201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102131133321 - 2⁵ = 102131133289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 4863387301 = 102131133321 / (1 + 0 + 2 + 1 + 3 + 1 + 1 + 3 + 3 + 3 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102131132321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2431693630 + ... + 2431693671.

It is an arithmetic number, because the mean of its divisors is an integer number (19453549208).

Almost surely, 2^102131133321 is an apocalyptic number.

It is an amenable number.

102131133321 is a deficient number, since it is larger than the sum of its proper divisors (53497260343).

102131133321 is an equidigital number, since it uses as much as digits as its factorization.

102131133321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4863387311.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 102131133321 its reverse (123331131201), we get a palindrome (225462264522).

The spelling of 102131133321 in words is "one hundred two billion, one hundred thirty-one million, one hundred thirty-three thousand, three hundred twenty-one".