1222133221525 has 6 divisors (see below), whose sum is σ = 1515445194722. Its totient is φ = 977706577200.

The previous prime is 1222133221493. The next prime is 1222133221571. The reversal of 1222133221525 is 5251223312221.

It can be written as a sum of positive squares in 3 ways, for example, as 29020485316 + 1193112736209 = 170354^2 + 1092297^2 .

It is not a de Polignac number, because 1222133221525 - 2⁵ = 1222133221493 is a prime.

It is a super-2 number, since 2×1222133221525² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24442664406 + ... + 24442664455.

Almost surely, 2^{1222133221525} is an apocalyptic number.

It is an amenable number.

1222133221525 is a deficient number, since it is larger than the sum of its proper divisors (293311973197).

1222133221525 is an equidigital number, since it uses as much as digits as its factorization.

1222133221525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48885328871 (or 48885328866 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

Adding to 1222133221525 its reverse (5251223312221), we get a palindrome (6473356533746).

The spelling of 1222133221525 in words is "one trillion, two hundred twenty-two billion, one hundred thirty-three million, two hundred twenty-one thousand, five hundred twenty-five".