1121161407 has 32 divisors (see below), whose sum is σ = 1638973440. Its totient is φ = 678658560.

The previous prime is 1121161387. The next prime is 1121161411. The reversal of 1121161407 is 7041611211.

It is not a de Polignac number, because 1121161407 - 2⁶ = 1121161343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121161507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 614098 + ... + 615920.

It is an arithmetic number, because the mean of its divisors is an integer number (51217920).

Almost surely, 2^1121161407 is an apocalyptic number.

1121161407 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1121161407 is a deficient number, since it is larger than the sum of its proper divisors (517812033).

1121161407 is a wasteful number, since it uses less digits than its factorization.

1121161407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2263.

The product of its (nonzero) digits is 336, while the sum is 24.

The square root of 1121161407 is about 33483.7484012767. The cubic root of 1121161407 is about 1038.8576605892.

Adding to 1121161407 its reverse (7041611211), we get a palindrome (8162772618).

The spelling of 1121161407 in words is "one billion, one hundred twenty-one million, one hundred sixty-one thousand, four hundred seven".