1100123399 has 2 divisors, whose sum is σ = 1100123400. Its totient is φ = 1100123398.

The previous prime is 1100123371. The next prime is 1100123429. The reversal of 1100123399 is 9933210011.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1100123399 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1100123369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550061699 + 550061700.

It is an arithmetic number, because the mean of its divisors is an integer number (550061700).

Almost surely, 2^1100123399 is an apocalyptic number.

1100123399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100123399 is an equidigital number, since it uses as much as digits as its factorization.

1100123399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 1100123399 is about 33168.1081613046. The cubic root of 1100123399 is about 1032.3187147203.

The spelling of 1100123399 in words is "one billion, one hundred million, one hundred twenty-three thousand, three hundred ninety-nine".