222213223221 has 32 divisors (see below), whose sum is σ = 337394626560. Its totient is φ = 128865897600.

The previous prime is 222213223189. The next prime is 222213223249. The reversal of 222213223221 is 122322312222.

It is not a de Polignac number, because 222213223221 - 2⁵ = 222213223189 is a prime.

It is a super-2 number, since 2×222213223221² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 222213223191 and 222213223200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222213223121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1129275 + ... + 1311368.

It is an arithmetic number, because the mean of its divisors is an integer number (10543582080).

Almost surely, 2^222213223221 is an apocalyptic number.

It is an amenable number.

222213223221 is a deficient number, since it is larger than the sum of its proper divisors (115181403339).

222213223221 is a wasteful number, since it uses less digits than its factorization.

222213223221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2440777.

The product of its digits is 2304, while the sum is 24.

Adding to 222213223221 its reverse (122322312222), we get a palindrome (344535535443).

The spelling of 222213223221 in words is "two hundred twenty-two billion, two hundred thirteen million, two hundred twenty-three thousand, two hundred twenty-one".