221000222201210 has 16 divisors (see below), whose sum is σ = 399158080513416. Its totient is φ = 88098382091328.

The previous prime is 221000222201141. The next prime is 221000222201219. The reversal of 221000222201210 is 12102222000122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 220662022961809 + 338199239401 = 14854697^2 + 581549^2 .

It is not an unprimeable number, because it can be changed into a prime (221000222201219) 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, 37713345569 + ... + 37713351428.

Almost surely, 2^{221000222201210} is an apocalyptic number.

221000222201210 is a deficient number, since it is larger than the sum of its proper divisors (178157858312206).

221000222201210 is a wasteful number, since it uses less digits than its factorization.

221000222201210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75426697297.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221000222201210 its reverse (12102222000122), we get a palindrome (233102444201332).

The spelling of 221000222201210 in words is "two hundred twenty-one trillion, two hundred twenty-two million, two hundred one thousand, two hundred ten".