1211340032140 has 48 divisors (see below), whose sum is σ = 2910222830592. Its totient is φ = 414887046336.

The previous prime is 1211340032087. The next prime is 1211340032141. The reversal of 1211340032140 is 412300431121.

It is not an unprimeable number, because it can be changed into a prime (1211340032141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4338472 + ... + 4609231.

It is an arithmetic number, because the mean of its divisors is an integer number (60629642304).

Almost surely, 2^{1211340032140} is an apocalyptic number.

1211340032140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211340032140 is an abundant number, since it is smaller than the sum of its proper divisors (1698882798452).

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

1211340032140 is a wasteful number, since it uses less digits than its factorization.

1211340032140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8948686 (or 8948684 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1211340032140 its reverse (412300431121), we get a palindrome (1623640463261).

The spelling of 1211340032140 in words is "one trillion, two hundred eleven billion, three hundred forty million, thirty-two thousand, one hundred forty".