12161267252 has 6 divisors (see below), whose sum is σ = 21282217698. Its totient is φ = 6080633624.

The previous prime is 12161267201. The next prime is 12161267297. The reversal of 12161267252 is 25276216121.

It can be written as a sum of positive squares in only one way, i.e., 12158590756 + 2676496 = 110266^2 + 1636^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1520158403 + ... + 1520158410.

It is an arithmetic number, because the mean of its divisors is an integer number (3547036283).

Almost surely, 2^12161267252 is an apocalyptic number.

It is an amenable number.

12161267252 is a deficient number, since it is larger than the sum of its proper divisors (9120950446).

12161267252 is a wasteful number, since it uses less digits than its factorization.

12161267252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3040316817 (or 3040316815 counting only the distinct ones).

The product of its digits is 20160, while the sum is 35.

The spelling of 12161267252 in words is "twelve billion, one hundred sixty-one million, two hundred sixty-seven thousand, two hundred fifty-two".