90201222011 has 2 divisors, whose sum is σ = 90201222012. Its totient is φ = 90201222010.

The previous prime is 90201221993. The next prime is 90201222019. The reversal of 90201222011 is 11022210209.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90201222011 - 2¹⁸ = 90200959867 is a prime.

It is not a weakly prime, because it can be changed into another prime (90201222019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45100611005 + 45100611006.

It is an arithmetic number, because the mean of its divisors is an integer number (45100611006).

Almost surely, 2^90201222011 is an apocalyptic number.

90201222011 is a deficient number, since it is larger than the sum of its proper divisors (1).

90201222011 is an equidigital number, since it uses as much as digits as its factorization.

90201222011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 90201222011 in words is "ninety billion, two hundred one million, two hundred twenty-two thousand, eleven".