1121233123 has 2 divisors, whose sum is σ = 1121233124. Its totient is φ = 1121233122.

The previous prime is 1121233117. The next prime is 1121233171. The reversal of 1121233123 is 3213321211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1121233123 - 2¹³ = 1121224931 is a prime.

It is a super-2 number, since 2×1121233123² = 2514327432224666258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1121233123.

It is not a weakly prime, because it can be changed into another prime (1121233193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560616561 + 560616562.

It is an arithmetic number, because the mean of its divisors is an integer number (560616562).

Almost surely, 2^1121233123 is an apocalyptic number.

1121233123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121233123 is an equidigital number, since it uses as much as digits as its factorization.

1121233123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216, while the sum is 19.

The square root of 1121233123 is about 33484.8192917328. The cubic root of 1121233123 is about 1038.8798105750.

Adding to 1121233123 its reverse (3213321211), we get a palindrome (4334554334).

It can be divided in two parts, 112 and 1233123, that added together give a triangular number (1233235 = T₁₅₇₀).

The spelling of 1121233123 in words is "one billion, one hundred twenty-one million, two hundred thirty-three thousand, one hundred twenty-three".