1121161461 has 16 divisors (see below), whose sum is σ = 1721892864. Its totient is φ = 635617584.

The previous prime is 1121161439. The next prime is 1121161493. The reversal of 1121161461 is 1641611211.

It is not a de Polignac number, because 1121161461 - 2⁵ = 1121161429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121161411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207525 + ... + 212858.

It is an arithmetic number, because the mean of its divisors is an integer number (107618304).

Almost surely, 2^1121161461 is an apocalyptic number.

It is an amenable number.

1121161461 is a deficient number, since it is larger than the sum of its proper divisors (600731403).

1121161461 is a wasteful number, since it uses less digits than its factorization.

1121161461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420520.

The product of its digits is 288, while the sum is 24.

The square root of 1121161461 is about 33483.7492076380. The cubic root of 1121161461 is about 1038.8576772679.

Adding to 1121161461 its reverse (1641611211), we get a palindrome (2762772672).

The spelling of 1121161461 in words is "one billion, one hundred twenty-one million, one hundred sixty-one thousand, four hundred sixty-one".