22011001200 has 90 divisors (see below), whose sum is σ = 76384300824. Its totient is φ = 5869599360.

The previous prime is 22011001153. The next prime is 22011001211. The reversal of 22011001200 is 210011022.

It is a tau number, because it is divible by the number of its divisors (90).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3053484 + ... + 3060683.

Almost surely, 2^22011001200 is an apocalyptic number.

22011001200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22011001200 is an abundant number, since it is smaller than the sum of its proper divisors (54373299624).

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

22011001200 is a wasteful number, since it uses less digits than its factorization.

22011001200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6114191 (or 6114177 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 22011001200 its reverse (210011022), we get a palindrome (22221012222).

The spelling of 22011001200 in words is "twenty-two billion, eleven million, one thousand, two hundred".