222011122120121 has 4 divisors (see below), whose sum is σ = 233695918021200. Its totient is φ = 210326326219044.

The previous prime is 222011122120091. The next prime is 222011122120127. The reversal of 222011122120121 is 121021221110222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222011122120121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222011122120093 and 222011122120102.

It is not an unprimeable number, because it can be changed into a prime (222011122120127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5842397950511 + ... + 5842397950548.

It is an arithmetic number, because the mean of its divisors is an integer number (58423979505300).

Almost surely, 2^{222011122120121} is an apocalyptic number.

It is an amenable number.

222011122120121 is a deficient number, since it is larger than the sum of its proper divisors (11684795901079).

222011122120121 is a wasteful number, since it uses less digits than its factorization.

222011122120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11684795901078.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 222011122120121 its reverse (121021221110222), we get a palindrome (343032343230343).

The spelling of 222011122120121 in words is "two hundred twenty-two trillion, eleven billion, one hundred twenty-two million, one hundred twenty thousand, one hundred twenty-one".