1120868981521 has 3 divisors (see below), whose sum is σ = 1120870040233. Its totient is φ = 1120867922810.

The previous prime is 1120868981503. The next prime is 1120868981539. The reversal of 1120868981521 is 1251898680211.

The square root of 1120868981521 is 1058711.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (1120868981503) and next prime (1120868981539).

It is not a de Polignac number, because 1120868981521 - 2²⁷ = 1120734763793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1120868981501) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 529356 + ... + 1588066.

Almost surely, 2^{1120868981521} is an apocalyptic number.

1120868981521 is the 1058711-st square number.

1120868981521 is the 529356-th centered octagonal number.

It is an amenable number.

1120868981521 is a deficient number, since it is larger than the sum of its proper divisors (1058712).

1120868981521 is an frugal number, since it uses more digits than its factorization.

1120868981521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2117422 (or 1058711 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 52.

The spelling of 1120868981521 in words is "one trillion, one hundred twenty billion, eight hundred sixty-eight million, nine hundred eighty-one thousand, five hundred twenty-one".