21112202201200 has 60 divisors (see below), whose sum is σ = 55333162689768. Its totient is φ = 7677164435200.

The previous prime is 21112202201171. The next prime is 21112202201219. The reversal of 21112202201200 is 210220221112.

It is a happy number.

It is a super-3 number, since 3×21112202201200³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2399109487 + ... + 2399118286.

Almost surely, 2^{21112202201200} is an apocalyptic number.

21112202201200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21112202201200 is an abundant number, since it is smaller than the sum of its proper divisors (34220960488568).

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

21112202201200 is a wasteful number, since it uses less digits than its factorization.

21112202201200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4798227802 (or 4798227791 counting only the distinct ones).

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

Adding to 21112202201200 its reverse (210220221112), we get a palindrome (21322422422312).

The spelling of 21112202201200 in words is "twenty-one trillion, one hundred twelve billion, two hundred two million, two hundred one thousand, two hundred".