1000222011200 has 42 divisors (see below), whose sum is σ = 2461171290246. Its totient is φ = 400088803840.

The previous prime is 1000222011197. The next prime is 1000222011203. The reversal of 1000222011200 is 21102220001.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1000222011197) and next prime (1000222011203).

It can be written as a sum of positive squares in 3 ways, for example, as 270010624 + 999952000576 = 16432^2 + 999976^2 .

It is a super-3 number, since 3×1000222011200³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000222011203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 312567779 + ... + 312570978.

Almost surely, 2^{1000222011200} is an apocalyptic number.

1000222011200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000222011200 is an abundant number, since it is smaller than the sum of its proper divisors (1460949279046).

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

1000222011200 is an equidigital number, since it uses as much as digits as its factorization.

1000222011200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625138779 (or 625138764 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1000222011200 its reverse (21102220001), we get a palindrome (1021324231201).

The spelling of 1000222011200 in words is "one trillion, two hundred twenty-two million, eleven thousand, two hundred".