222421243142021 has 32 divisors (see below), whose sum is σ = 278461205299200. Its totient is φ = 172592287315200.

The previous prime is 222421243142011. The next prime is 222421243142053. The reversal of 222421243142021 is 120241342124222.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222421243142021 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222421243142011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1073363180 + ... + 1073570378.

It is an arithmetic number, because the mean of its divisors is an integer number (8701912665600).

Almost surely, 2^{222421243142021} is an apocalyptic number.

It is an amenable number.

222421243142021 is a deficient number, since it is larger than the sum of its proper divisors (56039962157179).

222421243142021 is a wasteful number, since it uses less digits than its factorization.

222421243142021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265305.

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 222421243142021 its reverse (120241342124222), we get a palindrome (342662585266243).

The spelling of 222421243142021 in words is "two hundred twenty-two trillion, four hundred twenty-one billion, two hundred forty-three million, one hundred forty-two thousand, twenty-one".