1211141465208 has 112 divisors (see below), whose sum is σ = 3406239889920. Its totient is φ = 403540465536.

The previous prime is 1211141465207. The next prime is 1211141465231. The reversal of 1211141465208 is 8025641411121.

1211141465208 is a `hidden beast` number, since 1 + 2 + 1 + 114 + 14 + 6 + 520 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211141465207) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 13912585 + ... + 13999367.

It is an arithmetic number, because the mean of its divisors is an integer number (30412856160).

Almost surely, 2^{1211141465208} is an apocalyptic number.

1211141465208 is a gapful number since it is divisible by the number (18) 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 1211141465208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1703119944960).

1211141465208 is an abundant number, since it is smaller than the sum of its proper divisors (2195098424712).

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

1211141465208 is an equidigital number, since it uses as much as digits as its factorization.

1211141465208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89200 (or 89181 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

Adding to 1211141465208 its reverse (8025641411121), we get a palindrome (9236782876329).

The spelling of 1211141465208 in words is "one trillion, two hundred eleven billion, one hundred forty-one million, four hundred sixty-five thousand, two hundred eight".