19021102122 has 96 divisors (see below), whose sum is σ = 44022389760. Its totient is φ = 5418705600.

The previous prime is 19021102019. The next prime is 19021102123. The reversal of 19021102122 is 22120112091.

It is not an unprimeable number, because it can be changed into a prime (19021102123) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41082063 + ... + 41082525.

It is an arithmetic number, because the mean of its divisors is an integer number (458566560).

Almost surely, 2^19021102122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19021102122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22011194880).

19021102122 is an abundant number, since it is smaller than the sum of its proper divisors (25001287638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19021102122 is a wasteful number, since it uses less digits than its factorization.

19021102122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860 (or 679 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 19021102122 in words is "nineteen billion, twenty-one million, one hundred two thousand, one hundred twenty-two".