221012101202200 has 576 divisors, whose sum is σ = 670409748529920. Its totient is φ = 65823297408000.

The previous prime is 221012101202171. The next prime is 221012101202279. The reversal of 221012101202200 is 2202101210122.

It is a happy number.

It is a super-2 number, since 2×221012101202200² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 8122146595 + ... + 8122173805.

It is an arithmetic number, because the mean of its divisors is an integer number (1163905813420).

Almost surely, 2^{221012101202200} is an apocalyptic number.

221012101202200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221012101202200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335204874264960).

221012101202200 is an abundant number, since it is smaller than the sum of its proper divisors (449397647327720).

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

221012101202200 is a wasteful number, since it uses less digits than its factorization.

221012101202200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28288 (or 28256 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221012101202200 its reverse (2202101210122), we get a palindrome (223214202412322).

The spelling of 221012101202200 in words is "two hundred twenty-one trillion, twelve billion, one hundred one million, two hundred two thousand, two hundred".