21881032162222 has 4 divisors (see below), whose sum is σ = 32821548243336. Its totient is φ = 10940516081110.

The previous prime is 21881032162207. The next prime is 21881032162261. The reversal of 21881032162222 is 22226123018812.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5470258040554 + ... + 5470258040557.

It is an arithmetic number, because the mean of its divisors is an integer number (8205387060834).

Almost surely, 2^{21881032162222} is an apocalyptic number.

21881032162222 is a deficient number, since it is larger than the sum of its proper divisors (10940516081114).

21881032162222 is a wasteful number, since it uses less digits than its factorization.

21881032162222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10940516081113.

The product of its (nonzero) digits is 73728, while the sum is 40.

The spelling of 21881032162222 in words is "twenty-one trillion, eight hundred eighty-one billion, thirty-two million, one hundred sixty-two thousand, two hundred twenty-two".