21010022201200 has 120 divisors (see below), whose sum is σ = 50845809776960. Its totient is φ = 8342758425600.

The previous prime is 21010022201141. The next prime is 21010022201251. The reversal of 21010022201200 is 210222001012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29676946 + ... + 30376654.

Almost surely, 2^{21010022201200} is an apocalyptic number.

21010022201200 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 21010022201200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25422904888480).

21010022201200 is an abundant number, since it is smaller than the sum of its proper divisors (29835787575760).

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

21010022201200 is a wasteful number, since it uses less digits than its factorization.

21010022201200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700275 (or 700264 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21010022201200 its reverse (210222001012), we get a palindrome (21220244202212).

The spelling of 21010022201200 in words is "twenty-one trillion, ten billion, twenty-two million, two hundred one thousand, two hundred".