1121211220200 has 48 divisors (see below), whose sum is σ = 3475754784480. Its totient is φ = 298989658560.

The previous prime is 1121211220159. The next prime is 1121211220253. The reversal of 1121211220200 is 20221121211.

It is a super-2 number, since 2×1121211220200² (a number of 25 digits) contains 22 as substring.

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 1121211220200.

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, 934342084 + ... + 934343283.

It is an arithmetic number, because the mean of its divisors is an integer number (72411558010).

Almost surely, 2^{1121211220200} is an apocalyptic number.

1121211220200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121211220200 is an abundant number, since it is smaller than the sum of its proper divisors (2354543564280).

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

1121211220200 is a wasteful number, since it uses less digits than its factorization.

1121211220200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1868685386 (or 1868685377 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1121211220200 its reverse (20221121211), we get a palindrome (1141432341411).

The spelling of 1121211220200 in words is "one trillion, one hundred twenty-one billion, two hundred eleven million, two hundred twenty thousand, two hundred".