1116221220525 has 48 divisors (see below), whose sum is σ = 1851241512960. Its totient is φ = 593463998400.

The previous prime is 1116221220467. The next prime is 1116221220551. The reversal of 1116221220525 is 5250221226111.

It is not a de Polignac number, because 1116221220525 - 2¹⁷ = 1116221089453 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1116221220492 and 1116221220501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34351236 + ... + 34383714.

It is an arithmetic number, because the mean of its divisors is an integer number (38567531520).

Almost surely, 2^{1116221220525} is an apocalyptic number.

1116221220525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1116221220525 is a deficient number, since it is larger than the sum of its proper divisors (735020292435).

1116221220525 is a wasteful number, since it uses less digits than its factorization.

1116221220525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33906 (or 33901 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

Adding to 1116221220525 its reverse (5250221226111), we get a palindrome (6366442446636).

The spelling of 1116221220525 in words is "one trillion, one hundred sixteen billion, two hundred twenty-one million, two hundred twenty thousand, five hundred twenty-five".