1121380961 has 8 divisors (see below), whose sum is σ = 1187028480. Its totient is φ = 1057532112.

The previous prime is 1121380951. The next prime is 1121380987. The reversal of 1121380961 is 1690831211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1121380961 - 2²⁶ = 1054272097 is a prime.

It is a super-3 number, since 3×1121380961³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121380921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 448385 + ... + 450878.

It is an arithmetic number, because the mean of its divisors is an integer number (148378560).

Almost surely, 2^1121380961 is an apocalyptic number.

It is an amenable number.

1121380961 is a deficient number, since it is larger than the sum of its proper divisors (65647519).

1121380961 is an equidigital number, since it uses as much as digits as its factorization.

1121380961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899335.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 1121380961 is about 33487.0267566411. The cubic root of 1121380961 is about 1038.9254683900.

The spelling of 1121380961 in words is "one billion, one hundred twenty-one million, three hundred eighty thousand, nine hundred sixty-one".