123319115621 has 12 divisors (see below), whose sum is σ = 133601934528. Its totient is φ = 113775886224.

The previous prime is 123319115609. The next prime is 123319115683. The reversal of 123319115621 is 126511913321.

It is a de Polignac number, because none of the positive numbers 2^k-123319115621 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123319115021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156356 + ... + 520658.

It is an arithmetic number, because the mean of its divisors is an integer number (11133494544).

Almost surely, 2^123319115621 is an apocalyptic number.

It is an amenable number.

123319115621 is a deficient number, since it is larger than the sum of its proper divisors (10282818907).

123319115621 is a wasteful number, since it uses less digits than its factorization.

123319115621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366332 (or 366319 counting only the distinct ones).

The product of its digits is 9720, while the sum is 35.

The spelling of 123319115621 in words is "one hundred twenty-three billion, three hundred nineteen million, one hundred fifteen thousand, six hundred twenty-one".