21214523222 has 8 divisors (see below), whose sum is σ = 31860265896. Its totient is φ = 10594434592.

The previous prime is 21214523221. The next prime is 21214523233. The reversal of 21214523222 is 22232541212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21214523222² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21214523191 and 21214523200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21214523221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6411443 + ... + 6414750.

It is an arithmetic number, because the mean of its divisors is an integer number (3982533237).

Almost surely, 2^21214523222 is an apocalyptic number.

21214523222 is a deficient number, since it is larger than the sum of its proper divisors (10645742674).

21214523222 is a wasteful number, since it uses less digits than its factorization.

21214523222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12827022.

The product of its digits is 3840, while the sum is 26.

The spelling of 21214523222 in words is "twenty-one billion, two hundred fourteen million, five hundred twenty-three thousand, two hundred twenty-two".