12001164155252 has 6 divisors (see below), whose sum is σ = 21002037271698. Its totient is φ = 6000582077624.

The previous prime is 12001164155251. The next prime is 12001164155261. The reversal of 12001164155252 is 25255146110021.

It can be written as a sum of positive squares in only one way, i.e., 11889283271056 + 111880884196 = 3448084^2 + 334486^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001164155251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1500145519403 + ... + 1500145519410.

It is an arithmetic number, because the mean of its divisors is an integer number (3500339545283).

Almost surely, 2^{12001164155252} is an apocalyptic number.

It is an amenable number.

12001164155252 is a deficient number, since it is larger than the sum of its proper divisors (9000873116446).

12001164155252 is a wasteful number, since it uses less digits than its factorization.

12001164155252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3000291038817 (or 3000291038815 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 35.

The spelling of 12001164155252 in words is "twelve trillion, one billion, one hundred sixty-four million, one hundred fifty-five thousand, two hundred fifty-two".