222110121021 has 16 divisors (see below), whose sum is σ = 296964519936. Its totient is φ = 147664685376.

The previous prime is 222110121007. The next prime is 222110121043. The reversal of 222110121021 is 120121011222.

It is not a de Polignac number, because 222110121021 - 2⁶ = 222110120957 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222110121091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12001251 + ... + 12019743.

It is an arithmetic number, because the mean of its divisors is an integer number (18560282496).

Almost surely, 2^222110121021 is an apocalyptic number.

It is an amenable number.

222110121021 is a deficient number, since it is larger than the sum of its proper divisors (74854398915).

222110121021 is a wasteful number, since it uses less digits than its factorization.

222110121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29332.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 222110121021 its reverse (120121011222), we get a palindrome (342231132243).

The spelling of 222110121021 in words is "two hundred twenty-two billion, one hundred ten million, one hundred twenty-one thousand, twenty-one".