1121173911025 has 27 divisors (see below), whose sum is σ = 1617289622721. Its totient is φ = 768779555040.

The previous prime is 1121173911007. The next prime is 1121173911043. The reversal of 1121173911025 is 5201193711211.

The square root of 1121173911025 is 1058855.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (1121173911007) and next prime (1121173911043).

It can be written as a sum of positive squares in 4 ways, for example, as 200096077041 + 921077833984 = 447321^2 + 959728^2 .

It is not a de Polignac number, because 1121173911025 - 2¹⁷ = 1121173779953 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 37044799 + ... + 37075051.

Almost surely, 2^{1121173911025} is an apocalyptic number.

1121173911025 is the 1058855-th square number.

1121173911025 is the 529428-th centered octagonal number.

It is an amenable number.

1121173911025 is a deficient number, since it is larger than the sum of its proper divisors (496115711696).

1121173911025 is an frugal number, since it uses more digits than its factorization.

1121173911025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60530 (or 30265 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 34.

The spelling of 1121173911025 in words is "one trillion, one hundred twenty-one billion, one hundred seventy-three million, nine hundred eleven thousand, twenty-five".