221200122200 has 48 divisors (see below), whose sum is σ = 514366739880. Its totient is φ = 88466895360.

The previous prime is 221200122149. The next prime is 221200122251. The reversal of 221200122200 is 2221002122.

It is an interprime number because it is at equal distance from previous prime (221200122149) and next prime (221200122251).

It is a super-2 number, since 2×221200122200² (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 (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1326704 + ... + 1484096.

Almost surely, 2^221200122200 is an apocalyptic number.

221200122200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221200122200 is an abundant number, since it is smaller than the sum of its proper divisors (293166617680).

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

221200122200 is a wasteful number, since it uses less digits than its factorization.

221200122200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164436 (or 164427 counting only the distinct ones).

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

Adding to 221200122200 its reverse (2221002122), we get a palindrome (223421124322).

The spelling of 221200122200 in words is "two hundred twenty-one billion, two hundred million, one hundred twenty-two thousand, two hundred".