1211340130140 has 192 divisors, whose sum is σ = 4090273044480. Its totient is φ = 261863669760.

The previous prime is 1211340130097. The next prime is 1211340130153. The reversal of 1211340130140 is 410310431121.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 155260 + ... + 1564220.

It is an arithmetic number, because the mean of its divisors is an integer number (21303505440).

Almost surely, 2^{1211340130140} is an apocalyptic number.

1211340130140 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 1211340130140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2045136522240).

1211340130140 is an abundant number, since it is smaller than the sum of its proper divisors (2878932914340).

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

1211340130140 is a wasteful number, since it uses less digits than its factorization.

1211340130140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409092 (or 1409090 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1211340130140 its reverse (410310431121), we get a palindrome (1621650561261).

The spelling of 1211340130140 in words is "one trillion, two hundred eleven billion, three hundred forty million, one hundred thirty thousand, one hundred forty".