222101121220121 has 32 divisors (see below), whose sum is σ = 265523215641600. Its totient is φ = 183112366409280.

The previous prime is 222101121220103. The next prime is 222101121220133. The reversal of 222101121220121 is 121022121101222.

It is not a de Polignac number, because 222101121220121 - 2¹⁰ = 222101121219097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222101121220093 and 222101121220102.

It is not an unprimeable number, because it can be changed into a prime (222101121220921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26951141 + ... + 34213538.

It is an arithmetic number, because the mean of its divisors is an integer number (8297600488800).

Almost surely, 2^{222101121220121} is an apocalyptic number.

It is an amenable number.

222101121220121 is a deficient number, since it is larger than the sum of its proper divisors (43422094421479).

222101121220121 is a wasteful number, since it uses less digits than its factorization.

222101121220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61165149.

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

Adding to 222101121220121 its reverse (121022121101222), we get a palindrome (343123242321343).

The spelling of 222101121220121 in words is "two hundred twenty-two trillion, one hundred one billion, one hundred twenty-one million, two hundred twenty thousand, one hundred twenty-one".