1115621443121 has 8 divisors (see below), whose sum is σ = 1194242402400. Its totient is φ = 1038990888000.

The previous prime is 1115621443093. The next prime is 1115621443177. The reversal of 1115621443121 is 1213441265111.

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 1115621443121 - 2¹⁸ = 1115621180977 is a prime.

It is a super-2 number, since 2×1115621443121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1115621443621) 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, 497599880 + ... + 497602121.

It is an arithmetic number, because the mean of its divisors is an integer number (149280300300).

Almost surely, 2^{1115621443121} is an apocalyptic number.

It is an amenable number.

1115621443121 is a deficient number, since it is larger than the sum of its proper divisors (78620959279).

1115621443121 is an equidigital number, since it uses as much as digits as its factorization.

1115621443121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995202079.

The product of its digits is 5760, while the sum is 32.

The spelling of 1115621443121 in words is "one trillion, one hundred fifteen billion, six hundred twenty-one million, four hundred forty-three thousand, one hundred twenty-one".