222221002212111 has 8 divisors (see below), whose sum is σ = 338622479561344. Its totient is φ = 126983429835480.

The previous prime is 222221002212037. The next prime is 222221002212161. The reversal of 222221002212111 is 111212200122222.

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

It is not a de Polignac number, because 222221002212111 - 2³⁹ = 221671246398223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 10581952486291 = 222221002212111 / (2 + 2 + 2 + 2 + 2 + 1 + 0 + 0 + 2 + 2 + 1 + 2 + 1 + 1 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222221002212161) 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, 5290976243125 + ... + 5290976243166.

It is an arithmetic number, because the mean of its divisors is an integer number (42327809945168).

Almost surely, 2^{222221002212111} is an apocalyptic number.

222221002212111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

222221002212111 is a deficient number, since it is larger than the sum of its proper divisors (116401477349233).

222221002212111 is a wasteful number, since it uses less digits than its factorization.

222221002212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10581952486301.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 222221002212111 its reverse (111212200122222), we get a palindrome (333433202334333).

The spelling of 222221002212111 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, two million, two hundred twelve thousand, one hundred eleven".