1221113152360 has 32 divisors (see below), whose sum is σ = 2748713554440. Its totient is φ = 488230334464.

The previous prime is 1221113152307. The next prime is 1221113152387. The reversal of 1221113152360 is 632513111221.

It can be written as a sum of positive squares in 4 ways, for example, as 888181844356 + 332931308004 = 942434^2 + 577002^2 .

It is a super-2 number, since 2×1221113152360² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6624397 + ... + 6806236.

Almost surely, 2^{1221113152360} is an apocalyptic number.

1221113152360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1221113152360 is an abundant number, since it is smaller than the sum of its proper divisors (1527600402080).

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

1221113152360 is a wasteful number, since it uses less digits than its factorization.

1221113152360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13432917 (or 13432913 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

Adding to 1221113152360 its reverse (632513111221), we get a palindrome (1853626263581).

The spelling of 1221113152360 in words is "one trillion, two hundred twenty-one billion, one hundred thirteen million, one hundred fifty-two thousand, three hundred sixty".