221111002222210 has 64 divisors (see below), whose sum is σ = 435618242196480. Its totient is φ = 80494674600960.

The previous prime is 221111002222169. The next prime is 221111002222309. The reversal of 221111002222210 is 12222200111122.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136200619 + ... + 137814478.

It is an arithmetic number, because the mean of its divisors is an integer number (6806535034320).

Almost surely, 2^{221111002222210} is an apocalyptic number.

221111002222210 is a deficient number, since it is larger than the sum of its proper divisors (214507239974270).

221111002222210 is a wasteful number, since it uses less digits than its factorization.

221111002222210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274015291.

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

Adding to 221111002222210 its reverse (12222200111122), we get a palindrome (233333202333332).

The spelling of 221111002222210 in words is "two hundred twenty-one trillion, one hundred eleven billion, two million, two hundred twenty-two thousand, two hundred ten".