1112231921 has 2 divisors, whose sum is σ = 1112231922. Its totient is φ = 1112231920.

The previous prime is 1112231917. The next prime is 1112231941. The reversal of 1112231921 is 1291322111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1102240000 + 9991921 = 33200^2 + 3161^2 .

It is a cyclic number.

It is not a de Polignac number, because 1112231921 - 2² = 1112231917 is a prime.

It is not a weakly prime, because it can be changed into another prime (1112231941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556115960 + 556115961.

It is an arithmetic number, because the mean of its divisors is an integer number (556115961).

Almost surely, 2^1112231921 is an apocalyptic number.

It is an amenable number.

1112231921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112231921 is an equidigital number, since it uses as much as digits as its factorization.

1112231921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216, while the sum is 23.

The square root of 1112231921 is about 33350.1412440787. The cubic root of 1112231921 is about 1036.0923133083.

The spelling of 1112231921 in words is "one billion, one hundred twelve million, two hundred thirty-one thousand, nine hundred twenty-one".