221261171200700 has 36 divisors (see below), whose sum is σ = 481962356549520. Its totient is φ = 88167949578240.

The previous prime is 221261171200679. The next prime is 221261171200709. The reversal of 221261171200700 is 7002171162122.

It is a super-2 number, since 2×221261171200700² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221261171200709) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4206459845 + ... + 4206512444.

Almost surely, 2^{221261171200700} is an apocalyptic number.

221261171200700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221261171200700 is an abundant number, since it is smaller than the sum of its proper divisors (260701185348820).

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

221261171200700 is a wasteful number, since it uses less digits than its factorization.

221261171200700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8412972566 (or 8412972559 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 32.

The spelling of 221261171200700 in words is "two hundred twenty-one trillion, two hundred sixty-one billion, one hundred seventy-one million, two hundred thousand, seven hundred".