1133021231 has 2 divisors, whose sum is σ = 1133021232. Its totient is φ = 1133021230.

The previous prime is 1133021221. The next prime is 1133021237. The reversal of 1133021231 is 1321203311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1133021231 - 2¹⁸ = 1132759087 is a prime.

It is a super-2 number, since 2×1133021231² = 2567474219793510722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1133021237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 566510615 + 566510616.

It is an arithmetic number, because the mean of its divisors is an integer number (566510616).

Almost surely, 2^1133021231 is an apocalyptic number.

1133021231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1133021231 is an equidigital number, since it uses as much as digits as its factorization.

1133021231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1133021231 is about 33660.3807316554. The cubic root of 1133021231 is about 1042.5078870791.

Adding to 1133021231 its reverse (1321203311), we get a palindrome (2454224542).

The spelling of 1133021231 in words is "one billion, one hundred thirty-three million, twenty-one thousand, two hundred thirty-one".