222221211120121 has 8 divisors (see below), whose sum is σ = 222691726293120. Its totient is φ = 221750809930272.

The previous prime is 222221211120107. The next prime is 222221211120187. The reversal of 222221211120121 is 121021112122222.

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 222221211120121 - 2²⁹ = 222220674249209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222221211120092 and 222221211120101.

It is not an unprimeable number, because it can be changed into a prime (222221221120121) 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, 24591901 + ... + 32391418.

It is an arithmetic number, because the mean of its divisors is an integer number (27836465786640).

Almost surely, 2^{222221211120121} is an apocalyptic number.

It is an amenable number.

222221211120121 is a deficient number, since it is larger than the sum of its proper divisors (470515172999).

222221211120121 is an equidigital number, since it uses as much as digits as its factorization.

222221211120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56991575.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 222221211120121 its reverse (121021112122222), we get a palindrome (343242323242343).

The spelling of 222221211120121 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, two hundred eleven million, one hundred twenty thousand, one hundred twenty-one".