222242240140421 has 4 divisors (see below), whose sum is σ = 222412280111232. Its totient is φ = 222072200169612.

The previous prime is 222242240140379. The next prime is 222242240140423. The reversal of 222242240140421 is 124041042242222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 222242240140421 - 2¹⁸ = 222242239878277 is a prime.

It is a super-2 number, since 2×222242240140421² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222242240140423) 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, 85019983445 + ... + 85019986058.

It is an arithmetic number, because the mean of its divisors is an integer number (55603070027808).

Almost surely, 2^{222242240140421} is an apocalyptic number.

It is an amenable number.

222242240140421 is a deficient number, since it is larger than the sum of its proper divisors (170039970811).

222242240140421 is a wasteful number, since it uses less digits than its factorization.

222242240140421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170039970810.

The product of its (nonzero) digits is 32768, while the sum is 32.

Adding to 222242240140421 its reverse (124041042242222), we get a palindrome (346283282382643).

The spelling of 222242240140421 in words is "two hundred twenty-two trillion, two hundred forty-two billion, two hundred forty million, one hundred forty thousand, four hundred twenty-one".