221212211102110 has 8 divisors (see below), whose sum is σ = 398181979983816. Its totient is φ = 88484884440840.

The previous prime is 221212211102083. The next prime is 221212211102131. The reversal of 221212211102110 is 11201112212122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 11060610555096 + ... + 11060610555115.

It is an arithmetic number, because the mean of its divisors is an integer number (49772747497977).

Almost surely, 2^{221212211102110} is an apocalyptic number.

221212211102110 is a deficient number, since it is larger than the sum of its proper divisors (176969768881706).

221212211102110 is a wasteful number, since it uses less digits than its factorization.

221212211102110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22121221110218.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 221212211102110 its reverse (11201112212122), we get a palindrome (232413323314232).

The spelling of 221212211102110 in words is "two hundred twenty-one trillion, two hundred twelve billion, two hundred eleven million, one hundred two thousand, one hundred ten".