22221240340243 has 8 divisors (see below), whose sum is σ = 25507578592512. Its totient is φ = 18962870924616.

The previous prime is 22221240340231. The next prime is 22221240340253. The reversal of 22221240340243 is 34204304212222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22221240340243 - 2¹⁷ = 22221240209171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22221240340253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6992207455 + ... + 6992210632.

It is an arithmetic number, because the mean of its divisors is an integer number (3188447324064).

Almost surely, 2^{22221240340243} is an apocalyptic number.

22221240340243 is a deficient number, since it is larger than the sum of its proper divisors (3286338252269).

22221240340243 is a wasteful number, since it uses less digits than its factorization.

22221240340243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13984418321.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 22221240340243 its reverse (34204304212222), we get a palindrome (56425544552465).

The spelling of 22221240340243 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred forty million, three hundred forty thousand, two hundred forty-three".