222100221005 has 8 divisors (see below), whose sum is σ = 287021824152. Its totient is φ = 164012470848.

The previous prime is 222100220987. The next prime is 222100221047. The reversal of 222100221005 is 500122001222.

It can be written as a sum of positive squares in 4 ways, for example, as 667860649 + 221432360356 = 25843^2 + 470566^2 .

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 222100221005 - 2¹² = 222100216909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1708463174 + ... + 1708463303.

It is an arithmetic number, because the mean of its divisors is an integer number (35877728019).

Almost surely, 2^222100221005 is an apocalyptic number.

It is an amenable number.

222100221005 is a deficient number, since it is larger than the sum of its proper divisors (64921603147).

222100221005 is a wasteful number, since it uses less digits than its factorization.

222100221005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3416926495.

The product of its (nonzero) digits is 160, while the sum is 17.

Adding to 222100221005 its reverse (500122001222), we get a palindrome (722222222227).

The spelling of 222100221005 in words is "two hundred twenty-two billion, one hundred million, two hundred twenty-one thousand, five".