221212304012110 has 16 divisors (see below), whose sum is σ = 398220313052016. Its totient is φ = 88476440309248.

The previous prime is 221212304012071. The next prime is 221212304012113. The reversal of 221212304012110 is 11210403212122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221212304012113) 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, 1060052404 + ... + 1060261063.

It is an arithmetic number, because the mean of its divisors is an integer number (24888769565751).

Almost surely, 2^{221212304012110} is an apocalyptic number.

221212304012110 is a deficient number, since it is larger than the sum of its proper divisors (177008009039906).

221212304012110 is a wasteful number, since it uses less digits than its factorization.

221212304012110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2120323907.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 221212304012110 its reverse (11210403212122), we get a palindrome (232422707224232).

The spelling of 221212304012110 in words is "two hundred twenty-one trillion, two hundred twelve billion, three hundred four million, twelve thousand, one hundred ten".