212221221110 has 32 divisors (see below), whose sum is σ = 390784217472. Its totient is φ = 82942136320.

The previous prime is 212221221013. The next prime is 212221221151. The reversal of 212221221110 is 11122122212.

It is a congruent number.

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, 102011 + ... + 659430.

It is an arithmetic number, because the mean of its divisors is an integer number (12212006796).

Almost surely, 2^212221221110 is an apocalyptic number.

212221221110 is a deficient number, since it is larger than the sum of its proper divisors (178562996362).

212221221110 is a wasteful number, since it uses less digits than its factorization.

212221221110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762088.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212221221110 its reverse (11122122212), we get a palindrome (223343343322).

The spelling of 212221221110 in words is "two hundred twelve billion, two hundred twenty-one million, two hundred twenty-one thousand, one hundred ten".