222021212101 has 8 divisors (see below), whose sum is σ = 240704465400. Its totient is φ = 203567201472.

The previous prime is 222021212089. The next prime is 222021212173. The reversal of 222021212101 is 101212120222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 23418180900 + 198603031201 = 153030^2 + 445649^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 222021212101 - 2⁹ = 222021211589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222021512101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57308650 + ... + 57312523.

It is an arithmetic number, because the mean of its divisors is an integer number (30088058175).

Almost surely, 2^222021212101 is an apocalyptic number.

It is an amenable number.

222021212101 is a deficient number, since it is larger than the sum of its proper divisors (18683253299).

222021212101 is a wasteful number, since it uses less digits than its factorization.

222021212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114621335.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 222021212101 its reverse (101212120222), we get a palindrome (323233332323).

The spelling of 222021212101 in words is "two hundred twenty-two billion, twenty-one million, two hundred twelve thousand, one hundred one".