1121400569 has 4 divisors (see below), whose sum is σ = 1147479696. Its totient is φ = 1095321444.

The previous prime is 1121400517. The next prime is 1121400583. The reversal of 1121400569 is 9650041211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1121400569 - 2²⁰ = 1120351993 is a prime.

It is a super-2 number, since 2×1121400569² = 2515078472307047522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121420569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13039499 + ... + 13039584.

It is an arithmetic number, because the mean of its divisors is an integer number (286869924).

Almost surely, 2^1121400569 is an apocalyptic number.

It is an amenable number.

1121400569 is a deficient number, since it is larger than the sum of its proper divisors (26079127).

1121400569 is an equidigital number, since it uses as much as digits as its factorization.

1121400569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26079126.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 1121400569 is about 33487.3195254562. The cubic root of 1121400569 is about 1038.9315237606.

The spelling of 1121400569 in words is "one billion, one hundred twenty-one million, four hundred thousand, five hundred sixty-nine".