900111011 has 2 divisors, whose sum is σ = 900111012. Its totient is φ = 900111010.

The previous prime is 900110999. The next prime is 900111101. The reversal of 900111011 is 110111009.

It is a happy number.

Together with next prime (900111101) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (110111009) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 900111011 - 2¹⁸ = 899848867 is a prime.

It is not a weakly prime, because it can be changed into another prime (900111811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450055505 + 450055506.

It is an arithmetic number, because the mean of its divisors is an integer number (450055506).

Almost surely, 2^900111011 is an apocalyptic number.

900111011 is a deficient number, since it is larger than the sum of its proper divisors (1).

900111011 is an equidigital number, since it uses as much as digits as its factorization.

900111011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9, while the sum is 14.

The square root of 900111011 is about 30001.8501262839. The cubic root of 900111011 is about 965.5290792485.

The spelling of 900111011 in words is "nine hundred million, one hundred eleven thousand, eleven".