220220121100 has 36 divisors (see below), whose sum is σ = 546145902064. Its totient is φ = 75504041280.

The previous prime is 220220121029. The next prime is 220220121103. The reversal of 220220121100 is 1121022022.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (220220121103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157299387 + ... + 157300786.

Almost surely, 2^220220121100 is an apocalyptic number.

220220121100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220220121100 is an abundant number, since it is smaller than the sum of its proper divisors (325925780964).

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

220220121100 is a wasteful number, since it uses less digits than its factorization.

220220121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314600194 (or 314600187 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 220220121100 its reverse (1121022022), we get a palindrome (221341143122).

The spelling of 220220121100 in words is "two hundred twenty billion, two hundred twenty million, one hundred twenty-one thousand, one hundred".