212221111102 has 32 divisors (see below), whose sum is σ = 427410353664. Its totient is φ = 76323276000.

The previous prime is 212221111099. The next prime is 212221111103. The reversal of 212221111102 is 201111122212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212221111103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53000274 + ... + 53004277.

It is an arithmetic number, because the mean of its divisors is an integer number (13356573552).

Almost surely, 2^212221111102 is an apocalyptic number.

212221111102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212221111102 is an abundant number, since it is smaller than the sum of its proper divisors (215189242562).

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

212221111102 is a wasteful number, since it uses less digits than its factorization.

212221111102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106004584.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212221111102 its reverse (201111122212), we get a palindrome (413332233314).

It can be divided in two parts, 212221 and 111102, that added together give a palindrome (323323).

The spelling of 212221111102 in words is "two hundred twelve billion, two hundred twenty-one million, one hundred eleven thousand, one hundred two".