12361521801223 has 8 divisors (see below), whose sum is σ = 14415768864800. Its totient is φ = 10595590115040.

The previous prime is 12361521801193. The next prime is 12361521801227. The reversal of 12361521801223 is 32210812516321.

It is not a de Polignac number, because 12361521801223 - 2¹⁷ = 12361521670151 is a prime.

It is a super-2 number, since 2×12361521801223² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12361521801227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18019710738 + ... + 18019711423.

It is an arithmetic number, because the mean of its divisors is an integer number (1801971108100).

Almost surely, 2^{12361521801223} is an apocalyptic number.

12361521801223 is a deficient number, since it is larger than the sum of its proper divisors (2054247063577).

12361521801223 is an frugal number, since it uses more digits than its factorization.

12361521801223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36039422182 (or 36039422168 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 12361521801223 in words is "twelve trillion, three hundred sixty-one billion, five hundred twenty-one million, eight hundred one thousand, two hundred twenty-three".