2221031122200 has 144 divisors (see below), whose sum is σ = 8137050456600. Its totient is φ = 538431782400.

The previous prime is 2221031122199. The next prime is 2221031122201. The reversal of 2221031122200 is 22211301222.

It is an interprime number because it is at equal distance from previous prime (2221031122199) and next prime (2221031122201).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221031122201) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 56066845 + ... + 56106444.

Almost surely, 2^{2221031122200} is an apocalyptic number.

2221031122200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221031122200 is an abundant number, since it is smaller than the sum of its proper divisors (5916019334400).

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

2221031122200 is a wasteful number, since it uses less digits than its factorization.

2221031122200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112173322 (or 112173310 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 2221031122200 its reverse (22211301222), we get a palindrome (2243242423422).

The spelling of 2221031122200 in words is "two trillion, two hundred twenty-one billion, thirty-one million, one hundred twenty-two thousand, two hundred".