222221122211121 has 8 divisors (see below), whose sum is σ = 323230723216224. Its totient is φ = 134679468006720.

The previous prime is 222221122211093. The next prime is 222221122211167. The reversal of 222221122211121 is 121112221122222.

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

It is not a de Polignac number, because 222221122211121 - 2⁷ = 222221122210993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222221122211091 and 222221122211100.

It is not an unprimeable number, because it can be changed into a prime (222221126211121) 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, 3366986700136 + ... + 3366986700201.

It is an arithmetic number, because the mean of its divisors is an integer number (40403840402028).

Almost surely, 2^{222221122211121} is an apocalyptic number.

It is an amenable number.

222221122211121 is a deficient number, since it is larger than the sum of its proper divisors (101009601005103).

222221122211121 is a wasteful number, since it uses less digits than its factorization.

222221122211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6733973400351.

The product of its digits is 512, while the sum is 24.

Adding to 222221122211121 its reverse (121112221122222), we get a palindrome (343333343333343).

The spelling of 222221122211121 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, one hundred twenty-two million, two hundred eleven thousand, one hundred twenty-one".