212222011100 has 72 divisors (see below), whose sum is σ = 508440457728. Its totient is φ = 76241828800.

The previous prime is 212222011093. The next prime is 212222011123. The reversal of 212222011100 is 1110222212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1070924 + ... + 1253523.

It is an arithmetic number, because the mean of its divisors is an integer number (7061673024).

Almost surely, 2^212222011100 is an apocalyptic number.

212222011100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212222011100 is an abundant number, since it is smaller than the sum of its proper divisors (296218446628).

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

212222011100 is a wasteful number, since it uses less digits than its factorization.

212222011100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2324555 (or 2324548 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212222011100 its reverse (1110222212), we get a palindrome (213332233312).

The spelling of 212222011100 in words is "two hundred twelve billion, two hundred twenty-two million, eleven thousand, one hundred".