222100101010121 has 16 divisors (see below), whose sum is σ = 226178739415440. Its totient is φ = 218035944683520.

The previous prime is 222100101010097. The next prime is 222100101010129. The reversal of 222100101010121 is 121010101001222.

It can be written as a sum of positive squares in 8 ways, for example, as 120521116760521 + 101578984249600 = 10978211^2 + 10078640^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222100101010121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222100101010096 and 222100101010105.

It is not an unprimeable number, because it can be changed into a prime (222100101010129) 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, 71712125 + ... + 74745093.

It is an arithmetic number, because the mean of its divisors is an integer number (14136171213465).

Almost surely, 2^{222100101010121} is an apocalyptic number.

It is an amenable number.

222100101010121 is a deficient number, since it is larger than the sum of its proper divisors (4078638405319).

222100101010121 is a wasteful number, since it uses less digits than its factorization.

222100101010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3035356.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 222100101010121 its reverse (121010101001222), we get a palindrome (343110202011343).

The spelling of 222100101010121 in words is "two hundred twenty-two trillion, one hundred billion, one hundred one million, ten thousand, one hundred twenty-one".