1111211122200 has 48 divisors (see below), whose sum is σ = 3444754480680. Its totient is φ = 296322965760.

The previous prime is 1111211122183. The next prime is 1111211122279. The reversal of 1111211122200 is 22211121111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1111211122200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 926008669 + ... + 926009868.

Almost surely, 2^{1111211122200} is an apocalyptic number.

1111211122200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111211122200 is an abundant number, since it is smaller than the sum of its proper divisors (2333543358480).

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

1111211122200 is a wasteful number, since it uses less digits than its factorization.

1111211122200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1852018556 (or 1852018547 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1111211122200 its reverse (22211121111), we get a palindrome (1133422243311).

It can be divided in two parts, 111121 and 1122200, that added together give a palindrome (1233321).

The spelling of 1111211122200 in words is "one trillion, one hundred eleven billion, two hundred eleven million, one hundred twenty-two thousand, two hundred".