222101102222021 has 16 divisors (see below), whose sum is σ = 252827318348928. Its totient is φ = 193130807179200.

The previous prime is 222101102222009. The next prime is 222101102222059. The reversal of 222101102222021 is 120222201101222.

It is a de Polignac number, because none of the positive numbers 2^k-222101102222021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 222101102221984 and 222101102222002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222101102221021) 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 15 ways as a sum of consecutive naturals, for example, 96331715 + ... + 98610351.

It is an arithmetic number, because the mean of its divisors is an integer number (15801707396808).

Almost surely, 2^{222101102222021} is an apocalyptic number.

It is an amenable number.

222101102222021 is a deficient number, since it is larger than the sum of its proper divisors (30726216126907).

222101102222021 is a wasteful number, since it uses less digits than its factorization.

222101102222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2663932.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 222101102222021 its reverse (120222201101222), we get a palindrome (342323303323243).

The spelling of 222101102222021 in words is "two hundred twenty-two trillion, one hundred one billion, one hundred two million, two hundred twenty-two thousand, twenty-one".