12251346135242 has 16 divisors (see below), whose sum is σ = 18693680457192. Its totient is φ = 6020284893120.

The previous prime is 12251346135241. The next prime is 12251346135299. The reversal of 12251346135242 is 24253164315221.

It can be written as a sum of positive squares in 4 ways, for example, as 1701978550801 + 10549367584441 = 1304599^2 + 3247979^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12251346135242.

It is not an unprimeable number, because it can be changed into a prime (12251346135241) 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, 41245613 + ... + 41541584.

Almost surely, 2^{12251346135242} is an apocalyptic number.

12251346135242 is a deficient number, since it is larger than the sum of its proper divisors (6442334321950).

12251346135242 is a wasteful number, since it uses less digits than its factorization.

12251346135242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82788473.

The product of its digits is 345600, while the sum is 41.

The spelling of 12251346135242 in words is "twelve trillion, two hundred fifty-one billion, three hundred forty-six million, one hundred thirty-five thousand, two hundred forty-two".