102121311203 has 4 divisors (see below), whose sum is σ = 102144414768. Its totient is φ = 102098207640.

The previous prime is 102121311199. The next prime is 102121311211. The reversal of 102121311203 is 302113121201.

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

It is a cyclic number.

It is not a de Polignac number, because 102121311203 - 2² = 102121311199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102121311293) 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 3 ways as a sum of consecutive naturals, for example, 11545151 + ... + 11553992.

It is an arithmetic number, because the mean of its divisors is an integer number (25536103692).

Almost surely, 2^102121311203 is an apocalyptic number.

102121311203 is a deficient number, since it is larger than the sum of its proper divisors (23103565).

102121311203 is an equidigital number, since it uses as much as digits as its factorization.

102121311203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23103564.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 102121311203 its reverse (302113121201), we get a palindrome (404234432404).

The spelling of 102121311203 in words is "one hundred two billion, one hundred twenty-one million, three hundred eleven thousand, two hundred three".