22122221001200 has 30 divisors (see below), whose sum is σ = 53148635956344. Its totient is φ = 8848888400320.

The previous prime is 22122221001157. The next prime is 22122221001229. The reversal of 22122221001200 is 210012222122.

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 5 ways as a sum of consecutive naturals, for example, 27652775852 + ... + 27652776651.

Almost surely, 2^{22122221001200} is an apocalyptic number.

22122221001200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22122221001200 is an abundant number, since it is smaller than the sum of its proper divisors (31026414955144).

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

22122221001200 is a wasteful number, since it uses less digits than its factorization.

22122221001200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55305552521 (or 55305552510 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22122221001200 its reverse (210012222122), we get a palindrome (22332233223322).

The spelling of 22122221001200 in words is "twenty-two trillion, one hundred twenty-two billion, two hundred twenty-one million, one thousand, two hundred".