221222022 has 16 divisors (see below), whose sum is σ = 505650432. Its totient is φ = 63206280.

The previous prime is 221222011. The next prime is 221222039. The reversal of 221222022 is 220222122.

221222022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221221992 and 221222010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2633554 + ... + 2633637.

It is an arithmetic number, because the mean of its divisors is an integer number (31603152).

Almost surely, 2^221222022 is an apocalyptic number.

221222022 is an abundant number, since it is smaller than the sum of its proper divisors (284428410).

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

221222022 is a wasteful number, since it uses less digits than its factorization.

221222022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5267203.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 221222022 is about 14873.5342807283. The cubic root of 221222022 is about 604.7967552613.

Adding to 221222022 its reverse (220222122), we get a palindrome (441444144).

The spelling of 221222022 in words is "two hundred twenty-one million, two hundred twenty-two thousand, twenty-two".