222221102021121 has 8 divisors (see below), whose sum is σ = 338622631651264. Its totient is φ = 126983486869200.

The previous prime is 222221102021119. The next prime is 222221102021123. The reversal of 222221102021121 is 121120201122222.

It is an interprime number because it is at equal distance from previous prime (222221102021119) and next prime (222221102021123).

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

It is not a de Polignac number, because 222221102021121 - 2¹ = 222221102021119 is a prime.

It is a super-2 number, since 2×222221102021121² (a number of 29 digits) contains 22 as substring.

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: 10581957239101 = 222221102021121 / (2 + 2 + 2 + 2 + 2 + 1 + 1 + 0 + 2 + 0 + 2 + 1 + 1 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222221102021123) 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 7 ways as a sum of consecutive naturals, for example, 5290978619530 + ... + 5290978619571.

It is an arithmetic number, because the mean of its divisors is an integer number (42327828956408).

Almost surely, 2^{222221102021121} is an apocalyptic number.

222221102021121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

222221102021121 is a deficient number, since it is larger than the sum of its proper divisors (116401529630143).

222221102021121 is a wasteful number, since it uses less digits than its factorization.

222221102021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10581957239111.

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

Adding to 222221102021121 its reverse (121120201122222), we get a palindrome (343341303143343).

The spelling of 222221102021121 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, one hundred two million, twenty-one thousand, one hundred twenty-one".