2221421222 has 16 divisors (see below), whose sum is σ = 3365452800. Its totient is φ = 1099617288.

The previous prime is 2221421177. The next prime is 2221421231. The reversal of 2221421222 is 2221241222.

It is a junction number, because it is equal to n+sod(n) for n = 2221421194 and 2221421203.

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, 511223 + ... + 515549.

It is an arithmetic number, because the mean of its divisors is an integer number (210340800).

Almost surely, 2^2221421222 is an apocalyptic number.

2221421222 is a deficient number, since it is larger than the sum of its proper divisors (1144031578).

2221421222 is a wasteful number, since it uses less digits than its factorization.

2221421222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6835.

The product of its digits is 512, while the sum is 20.

The square root of 2221421222 is about 47131.9554230461. The cubic root of 2221421222 is about 1304.7990710549.

Adding to 2221421222 its reverse (2221241222), we get a palindrome (4442662444).

The spelling of 2221421222 in words is "two billion, two hundred twenty-one million, four hundred twenty-one thousand, two hundred twenty-two".