102134321121 has 16 divisors (see below), whose sum is σ = 155678329728. Its totient is φ = 58345564800.

The previous prime is 102134321117. The next prime is 102134321129. The reversal of 102134321121 is 121123431201.

It is not a de Polignac number, because 102134321121 - 2² = 102134321117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (102134321129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 629940 + ... + 775301.

It is an arithmetic number, because the mean of its divisors is an integer number (9729895608).

Almost surely, 2^102134321121 is an apocalyptic number.

It is an amenable number.

102134321121 is a deficient number, since it is larger than the sum of its proper divisors (53544008607).

102134321121 is a wasteful number, since it uses less digits than its factorization.

102134321121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1408712.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 102134321121 its reverse (121123431201), we get a palindrome (223257752322).

It can be divided in two parts, 10213 and 4321121, that added together give a palindrome (4331334).

The spelling of 102134321121 in words is "one hundred two billion, one hundred thirty-four million, three hundred twenty-one thousand, one hundred twenty-one".