1113221211291 has 64 divisors (see below), whose sum is σ = 1905115069440. Its totient is φ = 629287315200.

The previous prime is 1113221211247. The next prime is 1113221211299. The reversal of 1113221211291 is 1921121223111.

1113221211291 is a `hidden beast` number, since 11 + 132 + 21 + 211 + 291 = 666.

It is not a de Polignac number, because 1113221211291 - 2¹³ = 1113221203099 is a prime.

It is a super-2 number, since 2×1113221211291² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1113221211299) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22748736 + ... + 22797618.

It is an arithmetic number, because the mean of its divisors is an integer number (29767422960).

Almost surely, 2^{1113221211291} is an apocalyptic number.

1113221211291 is a deficient number, since it is larger than the sum of its proper divisors (791893858149).

1113221211291 is a wasteful number, since it uses less digits than its factorization.

1113221211291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50193 (or 50187 counting only the distinct ones).

The product of its digits is 432, while the sum is 27.

The spelling of 1113221211291 in words is "one trillion, one hundred thirteen billion, two hundred twenty-one million, two hundred eleven thousand, two hundred ninety-one".