900011101123 has 2 divisors, whose sum is σ = 900011101124. Its totient is φ = 900011101122.

The previous prime is 900011101081. The next prime is 900011101127. The reversal of 900011101123 is 321101110009.

It is a strong prime.

It is an emirp because it is prime and its reverse (321101110009) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 900011101123 - 2²⁵ = 899977546691 is a prime.

It is a super-2 number, since 2×900011101123² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 900011101123.

It is not a weakly prime, because it can be changed into another prime (900011101127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450005550561 + 450005550562.

It is an arithmetic number, because the mean of its divisors is an integer number (450005550562).

Almost surely, 2^900011101123 is an apocalyptic number.

900011101123 is a deficient number, since it is larger than the sum of its proper divisors (1).

900011101123 is an equidigital number, since it uses as much as digits as its factorization.

900011101123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 19.

The spelling of 900011101123 in words is "nine hundred billion, eleven million, one hundred one thousand, one hundred twenty-three".