221002200020100 has 144 divisors (see below), whose sum is σ = 674211097728000. Its totient is φ = 55738924974720.

The previous prime is 221002200020039. The next prime is 221002200020117. The reversal of 221002200020100 is 1020002200122.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28949904 + ... + 35778503.

It is an arithmetic number, because the mean of its divisors is an integer number (4682021512000).

Almost surely, 2^{221002200020100} is an apocalyptic number.

221002200020100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221002200020100 is an abundant number, since it is smaller than the sum of its proper divisors (453208897707900).

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

221002200020100 is a wasteful number, since it uses less digits than its factorization.

221002200020100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64729042 (or 64729035 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 221002200020100 its reverse (1020002200122), we get a palindrome (222022202220222).

The spelling of 221002200020100 in words is "two hundred twenty-one trillion, two billion, two hundred million, twenty thousand, one hundred".