22169990381 has 48 divisors (see below), whose sum is σ = 29940449280. Its totient is φ = 16017328800.

The previous prime is 22169990371. The next prime is 22169990389. The reversal of 22169990381 is 18309996122.

It is a happy number.

It is not a de Polignac number, because 22169990381 - 2⁶ = 22169990317 is a prime.

It is a super-2 number, since 2×22169990381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22169990389) 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, 741716 + ... + 771026.

It is an arithmetic number, because the mean of its divisors is an integer number (623759360).

Almost surely, 2^22169990381 is an apocalyptic number.

It is an amenable number.

22169990381 is a deficient number, since it is larger than the sum of its proper divisors (7770458899).

22169990381 is a wasteful number, since it uses less digits than its factorization.

22169990381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29406 (or 29395 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 50.

The spelling of 22169990381 in words is "twenty-two billion, one hundred sixty-nine million, nine hundred ninety thousand, three hundred eighty-one".