11115212315164 has 12 divisors (see below), whose sum is σ = 19451653210584. Its totient is φ = 5557597112144.

The previous prime is 11115212315143. The next prime is 11115212315213. The reversal of 11115212315164 is 46151321251111.

It is a super-2 number, since 2×11115212315164² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1038522 + ... + 4827934.

It is an arithmetic number, because the mean of its divisors is an integer number (1620971100882).

Almost surely, 2^{11115212315164} is an apocalyptic number.

It is an amenable number.

11115212315164 is a deficient number, since it is larger than the sum of its proper divisors (8336440895420).

11115212315164 is a wasteful number, since it uses less digits than its factorization.

11115212315164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4522724 (or 4522722 counting only the distinct ones).

The product of its digits is 7200, while the sum is 34.

Adding to 11115212315164 its reverse (46151321251111), we get a palindrome (57266533566275).

The spelling of 11115212315164 in words is "eleven trillion, one hundred fifteen billion, two hundred twelve million, three hundred fifteen thousand, one hundred sixty-four".