1211220102200 has 48 divisors (see below), whose sum is σ = 2906928260160. Its totient is φ = 468859392000.

The previous prime is 1211220102187. The next prime is 1211220102221. The reversal of 1211220102200 is 22010221121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97672841 + ... + 97685240.

It is an arithmetic number, because the mean of its divisors is an integer number (60561005420).

Almost surely, 2^{1211220102200} is an apocalyptic number.

1211220102200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211220102200 is an abundant number, since it is smaller than the sum of its proper divisors (1695708157960).

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

1211220102200 is a wasteful number, since it uses less digits than its factorization.

1211220102200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195358128 (or 195358119 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1211220102200 its reverse (22010221121), we get a palindrome (1233230323321).

The spelling of 1211220102200 in words is "one trillion, two hundred eleven billion, two hundred twenty million, one hundred two thousand, two hundred".