19221209094 has 16 divisors (see below), whose sum is σ = 38446934832. Its totient is φ = 6406316928.

The previous prime is 19221209087. The next prime is 19221209099. The reversal of 19221209094 is 49090212291.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19221209099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131559 + ... + 236114.

It is an arithmetic number, because the mean of its divisors is an integer number (2402933427).

Almost surely, 2^19221209094 is an apocalyptic number.

19221209094 is an abundant number, since it is smaller than the sum of its proper divisors (19225725738).

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

19221209094 is a wasteful number, since it uses less digits than its factorization.

19221209094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376391.

The product of its (nonzero) digits is 23328, while the sum is 39.

The spelling of 19221209094 in words is "nineteen billion, two hundred twenty-one million, two hundred nine thousand, ninety-four".