90311220011 has 2 divisors, whose sum is σ = 90311220012. Its totient is φ = 90311220010.

The previous prime is 90311219981. The next prime is 90311220023. The reversal of 90311220011 is 11002211309.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90311220011 is a prime.

It is a super-2 number, since 2×90311220011² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (90311280011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45155610005 + 45155610006.

It is an arithmetic number, because the mean of its divisors is an integer number (45155610006).

Almost surely, 2^90311220011 is an apocalyptic number.

90311220011 is a deficient number, since it is larger than the sum of its proper divisors (1).

90311220011 is an equidigital number, since it uses as much as digits as its factorization.

90311220011 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 20.

The spelling of 90311220011 in words is "ninety billion, three hundred eleven million, two hundred twenty thousand, eleven".