121312201331223 has 32 divisors (see below), whose sum is σ = 205517212736000. Its totient is φ = 69280456508928.

The previous prime is 121312201331149. The next prime is 121312201331239. The reversal of 121312201331223 is 322133102213121.

121312201331223 is a `hidden beast` number, since 1 + 2 + 1 + 312 + 2 + 0 + 13 + 312 + 23 = 666.

It is not a de Polignac number, because 121312201331223 - 2¹⁶ = 121312201265687 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121312201331273) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 188573386 + ... + 189215607.

It is an arithmetic number, because the mean of its divisors is an integer number (6422412898000).

Almost surely, 2^{121312201331223} is an apocalyptic number.

121312201331223 is a deficient number, since it is larger than the sum of its proper divisors (84205011404777).

121312201331223 is a wasteful number, since it uses less digits than its factorization.

121312201331223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377790708 (or 377790702 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 121312201331223 its reverse (322133102213121), we get a palindrome (443445303544344).

The spelling of 121312201331223 in words is "one hundred twenty-one trillion, three hundred twelve billion, two hundred one million, three hundred thirty-one thousand, two hundred twenty-three".