221002122122210 has 64 divisors (see below), whose sum is σ = 467402111406720. Its totient is φ = 74174249671680.

The previous prime is 221002122122203. The next prime is 221002122122213. The reversal of 221002122122210 is 12221221200122.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221002122122213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4195706 + ... + 21438474.

It is an arithmetic number, because the mean of its divisors is an integer number (7303157990730).

Almost surely, 2^{221002122122210} is an apocalyptic number.

221002122122210 is an abundant number, since it is smaller than the sum of its proper divisors (246399989284510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221002122122210 is a wasteful number, since it uses less digits than its factorization.

221002122122210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17251763.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 221002122122210 its reverse (12221221200122), we get a palindrome (233223343322332).

The spelling of 221002122122210 in words is "two hundred twenty-one trillion, two billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred ten".