1211011122200 has 48 divisors (see below), whose sum is σ = 3071564579160. Its totient is φ = 440367680000.

The previous prime is 1211011122197. The next prime is 1211011122229. The reversal of 1211011122200 is 22211101121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 275227601 + ... + 275232000.

Almost surely, 2^{1211011122200} is an apocalyptic number.

1211011122200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211011122200 is an abundant number, since it is smaller than the sum of its proper divisors (1860553456960).

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

1211011122200 is a wasteful number, since it uses less digits than its factorization.

1211011122200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550459628 (or 550459619 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1211011122200 its reverse (22211101121), we get a palindrome (1233222223321).

The spelling of 1211011122200 in words is "one trillion, two hundred eleven billion, eleven million, one hundred twenty-two thousand, two hundred".