11771212151 has 8 divisors (see below), whose sum is σ = 12350126208. Its totient is φ = 11204748000.

The previous prime is 11771212127. The next prime is 11771212207. The reversal of 11771212151 is 15121217711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11771212151 - 2²⁶ = 11704103287 is a prime.

It is a super-2 number, since 2×11771212151² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11771212451) 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, 3110540 + ... + 3114321.

It is an arithmetic number, because the mean of its divisors is an integer number (1543765776).

Almost surely, 2^11771212151 is an apocalyptic number.

11771212151 is a deficient number, since it is larger than the sum of its proper divisors (578914057).

11771212151 is an equidigital number, since it uses as much as digits as its factorization.

11771212151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6224953.

The product of its digits is 980, while the sum is 29.

Adding to 11771212151 its reverse (15121217711), we get a palindrome (26892429862).

The spelling of 11771212151 in words is "eleven billion, seven hundred seventy-one million, two hundred twelve thousand, one hundred fifty-one".