1211140213260 has 192 divisors, whose sum is σ = 3468631832064. Its totient is φ = 315694080000.

The previous prime is 1211140213237. The next prime is 1211140213277. The reversal of 1211140213260 is 623120411121.

It is a self number, because there is not a number n which added to its sum of digits gives 1211140213260.

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 63 ways as a sum of consecutive naturals, for example, 260401935 + ... + 260406585.

It is an arithmetic number, because the mean of its divisors is an integer number (18065790792).

Almost surely, 2^{1211140213260} is an apocalyptic number.

1211140213260 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 1211140213260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1734315916032).

1211140213260 is an abundant number, since it is smaller than the sum of its proper divisors (2257491618804).

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

1211140213260 is a wasteful number, since it uses less digits than its factorization.

1211140213260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5304 (or 5302 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 1211140213260 its reverse (623120411121), we get a palindrome (1834260624381).

The spelling of 1211140213260 in words is "one trillion, two hundred eleven billion, one hundred forty million, two hundred thirteen thousand, two hundred sixty".