1211042412200 has 96 divisors (see below), whose sum is σ = 2829881599200. Its totient is φ = 481975338240.

The previous prime is 1211042412197. The next prime is 1211042412221. The reversal of 1211042412200 is 22142401121.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 79306166 + ... + 79321434.

It is an arithmetic number, because the mean of its divisors is an integer number (29477933325).

Almost surely, 2^{1211042412200} is an apocalyptic number.

1211042412200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1211042412200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1414940799600).

1211042412200 is an abundant number, since it is smaller than the sum of its proper divisors (1618839187000).

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

1211042412200 is a wasteful number, since it uses less digits than its factorization.

1211042412200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17259 (or 17250 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1211042412200 its reverse (22142401121), we get a palindrome (1233184813321).

The spelling of 1211042412200 in words is "one trillion, two hundred eleven billion, forty-two million, four hundred twelve thousand, two hundred".