1221112043433 has 16 divisors (see below), whose sum is σ = 1809079455040. Its totient is φ = 814063636512.

The previous prime is 1221112043413. The next prime is 1221112043453. The reversal of 1221112043433 is 3343402111221.

1221112043433 is a `hidden beast` number, since 1 + 2 + 2 + 111 + 204 + 343 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (1221112043413) and next prime (1221112043453).

It is not a de Polignac number, because 1221112043433 - 2⁵ = 1221112043401 is a prime.

It is a super-2 number, since 2×1221112043433² (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 a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1221112043397 and 1221112043406.

It is not an unprimeable number, because it can be changed into a prime (1221112043413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2044410 + ... + 2573292.

It is an arithmetic number, because the mean of its divisors is an integer number (113067465940).

Almost surely, 2^{1221112043433} is an apocalyptic number.

It is an amenable number.

1221112043433 is a deficient number, since it is larger than the sum of its proper divisors (587967411607).

1221112043433 is an equidigital number, since it uses as much as digits as its factorization.

1221112043433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614405 (or 614399 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 1221112043433 its reverse (3343402111221), we get a palindrome (4564514154654).

The spelling of 1221112043433 in words is "one trillion, two hundred twenty-one billion, one hundred twelve million, forty-three thousand, four hundred thirty-three".