22212211001200 has 240 divisors, whose sum is σ = 61348811139072. Its totient is φ = 7649488000000.

The previous prime is 22212211001179. The next prime is 22212211001251. The reversal of 22212211001200 is 210011221222.

It is a happy number.

It is a super-3 number, since 3×22212211001200³ (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 pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9134625 + ... + 11307775.

Almost surely, 2^{22212211001200} is an apocalyptic number.

22212211001200 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 22212211001200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30674405569536).

22212211001200 is an abundant number, since it is smaller than the sum of its proper divisors (39136600137872).

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

22212211001200 is a wasteful number, since it uses less digits than its factorization.

22212211001200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2173304 (or 2173293 counting only the distinct ones).

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

Adding to 22212211001200 its reverse (210011221222), we get a palindrome (22422222222422).

The spelling of 22212211001200 in words is "twenty-two trillion, two hundred twelve billion, two hundred eleven million, one thousand, two hundred".