222240343042221 has 64 divisors (see below), whose sum is σ = 344699280691200. Its totient is φ = 124740754790400.

The previous prime is 222240343042177. The next prime is 222240343042231. The reversal of 222240343042221 is 122240343042222.

It is not a de Polignac number, because 222240343042221 - 2¹⁵ = 222240343009453 is a prime.

It is a super-2 number, since 2×222240343042221² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222240343042231) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 524756011 + ... + 525179351.

It is an arithmetic number, because the mean of its divisors is an integer number (5385926260800).

Almost surely, 2^{222240343042221} is an apocalyptic number.

222240343042221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

222240343042221 is a deficient number, since it is larger than the sum of its proper divisors (122458937648979).

222240343042221 is a wasteful number, since it uses less digits than its factorization.

222240343042221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424730.

The product of its (nonzero) digits is 73728, while the sum is 33.

Adding to 222240343042221 its reverse (122240343042222), we get a palindrome (344480686084443).

Subtracting from 222240343042221 its reverse (122240343042222), we obtain a palindrome (99999999999999).

The spelling of 222240343042221 in words is "two hundred twenty-two trillion, two hundred forty billion, three hundred forty-three million, forty-two thousand, two hundred twenty-one".