1220100211200 has 240 divisors, whose sum is σ = 4340566935936. Its totient is φ = 300332236800.

The previous prime is 1220100211181. The next prime is 1220100211241. The reversal of 1220100211200 is 21120010221.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 722856 + ... + 1721255.

Almost surely, 2^{1220100211200} is an apocalyptic number.

1220100211200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220100211200 is an abundant number, since it is smaller than the sum of its proper divisors (3120466724736).

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

1220100211200 is a wasteful number, since it uses less digits than its factorization.

1220100211200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2444155 (or 2444134 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1220100211200 its reverse (21120010221), we get a palindrome (1241220221421).

The spelling of 1220100211200 in words is "one trillion, two hundred twenty billion, one hundred million, two hundred eleven thousand, two hundred".