12251401363266 has 32 divisors (see below), whose sum is σ = 26562386272128. Its totient is φ = 3744697305600.

The previous prime is 12251401363237. The next prime is 12251401363301. The reversal of 12251401363266 is 66236310415221.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 520085071 + ... + 520108626.

It is an arithmetic number, because the mean of its divisors is an integer number (830074571004).

Almost surely, 2^{12251401363266} is an apocalyptic number.

12251401363266 is an abundant number, since it is smaller than the sum of its proper divisors (14310984908862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12251401363266 is a wasteful number, since it uses less digits than its factorization.

12251401363266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040193866.

The product of its (nonzero) digits is 311040, while the sum is 42.

Adding to 12251401363266 its reverse (66236310415221), we get a palindrome (78487711778487).

The spelling of 12251401363266 in words is "twelve trillion, two hundred fifty-one billion, four hundred one million, three hundred sixty-three thousand, two hundred sixty-six".