220001102120 has 16 divisors (see below), whose sum is σ = 495002479860. Its totient is φ = 88000440832.

The previous prime is 220001102077. The next prime is 220001102131. The reversal of 220001102120 is 21201100022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 218685299044 + 1315803076 = 467638^2 + 36274^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2750013737 + ... + 2750013816.

Almost surely, 2^220001102120 is an apocalyptic number.

220001102120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220001102120 is an abundant number, since it is smaller than the sum of its proper divisors (275001377740).

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

220001102120 is a wasteful number, since it uses less digits than its factorization.

220001102120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5500027564 (or 5500027560 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 220001102120 its reverse (21201100022), we get a palindrome (241202202142).

The spelling of 220001102120 in words is "two hundred twenty billion, one million, one hundred two thousand, one hundred twenty".