1211340130110 has 384 divisors, whose sum is σ = 3662251107840. Its totient is φ = 274716748800.

The previous prime is 1211340130097. The next prime is 1211340130153. The reversal of 1211340130110 is 110310431121.

It is a happy number.

1211340130110 is a `hidden beast` number, since 1 + 2 + 11 + 340 + 1 + 301 + 10 = 666.

It is a super-2 number, since 2×1211340130110² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 510897225 + ... + 510899595.

It is an arithmetic number, because the mean of its divisors is an integer number (9537112260).

Almost surely, 2^{1211340130110} is an apocalyptic number.

1211340130110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1211340130110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1831125553920).

1211340130110 is an abundant number, since it is smaller than the sum of its proper divisors (2450910977730).

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

1211340130110 is a wasteful number, since it uses less digits than its factorization.

1211340130110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2744 (or 2741 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1211340130110 its reverse (110310431121), we get a palindrome (1321650561231).

The spelling of 1211340130110 in words is "one trillion, two hundred eleven billion, three hundred forty million, one hundred thirty thousand, one hundred ten".