221222113210 has 16 divisors (see below), whose sum is σ = 455085490176. Its totient is φ = 75847581648.

The previous prime is 221222113207. The next prime is 221222113283. The reversal of 221222113210 is 12311222122.

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, 1580157882 + ... + 1580158021.

It is an arithmetic number, because the mean of its divisors is an integer number (28442843136).

Almost surely, 2^221222113210 is an apocalyptic number.

221222113210 is an abundant number, since it is smaller than the sum of its proper divisors (233863376966).

221222113210 is a wasteful number, since it uses less digits than its factorization.

221222113210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3160315917.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 221222113210 its reverse (12311222122), we get a palindrome (233533335332).

The spelling of 221222113210 in words is "two hundred twenty-one billion, two hundred twenty-two million, one hundred thirteen thousand, two hundred ten".