222221201021121 has 64 divisors (see below), whose sum is σ = 309395240386560. Its totient is φ = 141714159612480.

The previous prime is 222221201021093. The next prime is 222221201021143. The reversal of 222221201021121 is 121120102122222.

It is not a de Polignac number, because 222221201021121 - 2¹⁰ = 222221201020097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222221201028121) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17739372760 + ... + 17739385286.

It is an arithmetic number, because the mean of its divisors is an integer number (4834300631040).

Almost surely, 2^{222221201021121} is an apocalyptic number.

It is an amenable number.

222221201021121 is a deficient number, since it is larger than the sum of its proper divisors (87174039365439).

222221201021121 is a wasteful number, since it uses less digits than its factorization.

222221201021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16474.

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

Adding to 222221201021121 its reverse (121120102122222), we get a palindrome (343341303143343).

The spelling of 222221201021121 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, two hundred one million, twenty-one thousand, one hundred twenty-one".