12157250011 has 4 divisors (see below), whose sum is σ = 12157514224. Its totient is φ = 12156985800.

The previous prime is 12157250003. The next prime is 12157250023. The reversal of 12157250011 is 11005275121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11005275121 = 31649 ⋅347729.

It is a cyclic number.

It is not a de Polignac number, because 12157250011 - 2³ = 12157250003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12157250071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43095 + ... + 161776.

It is an arithmetic number, because the mean of its divisors is an integer number (3039378556).

Almost surely, 2^12157250011 is an apocalyptic number.

12157250011 is a deficient number, since it is larger than the sum of its proper divisors (264213).

12157250011 is an equidigital number, since it uses as much as digits as its factorization.

12157250011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264212.

The product of its (nonzero) digits is 700, while the sum is 25.

The spelling of 12157250011 in words is "twelve billion, one hundred fifty-seven million, two hundred fifty thousand, eleven".