1121203239 has 16 divisors (see below), whose sum is σ = 1618116192. Its totient is φ = 686464128.

The previous prime is 1121203219. The next prime is 1121203273. The reversal of 1121203239 is 9323021211.

It is not a de Polignac number, because 1121203239 - 2²³ = 1112814631 is a prime.

It is a super-2 number, since 2×1121203239² = 2514193406288182242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121203219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65284 + ... + 80649.

It is an arithmetic number, because the mean of its divisors is an integer number (101132262).

Almost surely, 2^1121203239 is an apocalyptic number.

1121203239 is a deficient number, since it is larger than the sum of its proper divisors (496912953).

1121203239 is a wasteful number, since it uses less digits than its factorization.

1121203239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146146.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 1121203239 is about 33484.3730566962. The cubic root of 1121203239 is about 1038.8705808084.

The spelling of 1121203239 in words is "one billion, one hundred twenty-one million, two hundred three thousand, two hundred thirty-nine".