220021123100 has 18 divisors (see below), whose sum is σ = 477445837344. Its totient is φ = 88008449200.

The previous prime is 220021123087. The next prime is 220021123111. The reversal of 220021123100 is 1321120022.

It is a happy number.

220021123100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×220021123100² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1100105516 + ... + 1100105715.

Almost surely, 2^220021123100 is an apocalyptic number.

220021123100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220021123100 is an abundant number, since it is smaller than the sum of its proper divisors (257424714244).

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

220021123100 is a wasteful number, since it uses less digits than its factorization.

220021123100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2200211245 (or 2200211238 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 220021123100 its reverse (1321120022), we get a palindrome (221342243122).

The spelling of 220021123100 in words is "two hundred twenty billion, twenty-one million, one hundred twenty-three thousand, one hundred".