222121221110 has 8 divisors (see below), whose sum is σ = 399818198016. Its totient is φ = 88848488440.

The previous prime is 222121221097. The next prime is 222121221181. The reversal of 222121221110 is 11122121222.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11106061046 + ... + 11106061065.

It is an arithmetic number, because the mean of its divisors is an integer number (49977274752).

Almost surely, 2^222121221110 is an apocalyptic number.

222121221110 is a deficient number, since it is larger than the sum of its proper divisors (177696976906).

222121221110 is a wasteful number, since it uses less digits than its factorization.

222121221110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22212122118.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 222121221110 its reverse (11122121222), we get a palindrome (233243342332).

The spelling of 222121221110 in words is "two hundred twenty-two billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred ten".