91002211220019 has 16 divisors (see below), whose sum is σ = 134231174555904. Its totient is φ = 54376054504800.

The previous prime is 91002211219939. The next prime is 91002211220051.

91002211220019 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 91002211220019 - 2³² = 90997916252723 is a prime.

It is a super-2 number, since 2×91002211220019² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91002211220099) 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, 19420017124 + ... + 19420021809.

It is an arithmetic number, because the mean of its divisors is an integer number (8389448409744).

Almost surely, 2^{91002211220019} is an apocalyptic number.

91002211220019 is a deficient number, since it is larger than the sum of its proper divisors (43228963335885).

91002211220019 is a wasteful number, since it uses less digits than its factorization.

91002211220019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38840039018.

The product of its (nonzero) digits is 1296, while the sum is 30.

The spelling of 91002211220019 in words is "ninety-one trillion, two billion, two hundred eleven million, two hundred twenty thousand, nineteen".