221200121122210 has 32 divisors (see below), whose sum is σ = 402629889715200. Its totient is φ = 87492113867328.

The previous prime is 221200121122159. The next prime is 221200121122229. The reversal of 221200121122210 is 12221121002122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 332529742 + ... + 333194281.

It is an arithmetic number, because the mean of its divisors is an integer number (12582184053600).

Almost surely, 2^{221200121122210} is an apocalyptic number.

221200121122210 is a deficient number, since it is larger than the sum of its proper divisors (181429768592990).

221200121122210 is a wasteful number, since it uses less digits than its factorization.

221200121122210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665724402.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221200121122210 its reverse (12221121002122), we get a palindrome (233421242124332).

The spelling of 221200121122210 in words is "two hundred twenty-one trillion, two hundred billion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred ten".