91011022211122 has 32 divisors (see below), whose sum is σ = 147234075634800. Its totient is φ = 41943340373760.

The previous prime is 91011022211117. The next prime is 91011022211129. The reversal of 91011022211122 is 22111222011019.

It can be written as a sum of positive squares in 8 ways, for example, as 550550644081 + 90460471567041 = 741991^2 + 9511071^2 .

It is not an unprimeable number, because it can be changed into a prime (91011022211129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47920872 + ... + 49783852.

Almost surely, 2^{91011022211122} is an apocalyptic number.

91011022211122 is a deficient number, since it is larger than the sum of its proper divisors (56223053423678).

91011022211122 is a wasteful number, since it uses less digits than its factorization.

91011022211122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1865758.

The product of its (nonzero) digits is 288, while the sum is 25.

The spelling of 91011022211122 in words is "ninety-one trillion, eleven billion, twenty-two million, two hundred eleven thousand, one hundred twenty-two".