221001200122200 has 192 divisors, whose sum is σ = 716838786524160. Its totient is φ = 56217718993920.

The previous prime is 221001200122063. The next prime is 221001200122237. The reversal of 221001200122200 is 2221002100122.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 221001200122200.

It is a congruent number.

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, 16753629 + ... + 26882828.

It is an arithmetic number, because the mean of its divisors is an integer number (3733535346480).

Almost surely, 2^{221001200122200} is an apocalyptic number.

221001200122200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221001200122200 is an abundant number, since it is smaller than the sum of its proper divisors (495837586401960).

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

221001200122200 is a wasteful number, since it uses less digits than its factorization.

221001200122200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43636866 (or 43636857 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 221001200122200 its reverse (2221002100122), we get a palindrome (223222202222322).

The spelling of 221001200122200 in words is "two hundred twenty-one trillion, one billion, two hundred million, one hundred twenty-two thousand, two hundred".