222220012100 has 18 divisors (see below), whose sum is σ = 482217426474. Its totient is φ = 88888004800.

The previous prime is 222220012093. The next prime is 222220012103. The reversal of 222220012100 is 1210022222.

222220012100 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 460016704 + 221759995396 = 21448^2 + 470914^2 .

It is not an unprimeable number, because it can be changed into a prime (222220012103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1111099961 + ... + 1111100160.

Almost surely, 2^222220012100 is an apocalyptic number.

222220012100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222220012100 is an abundant number, since it is smaller than the sum of its proper divisors (259997414374).

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

222220012100 is a wasteful number, since it uses less digits than its factorization.

222220012100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222200135 (or 2222200128 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 222220012100 its reverse (1210022222), we get a palindrome (223430034322).

The spelling of 222220012100 in words is "two hundred twenty-two billion, two hundred twenty million, twelve thousand, one hundred".