1211352050340 has 72 divisors (see below), whose sum is σ = 3675205392768. Its totient is φ = 322959447360.

The previous prime is 1211352050333. The next prime is 1211352050413. The reversal of 1211352050340 is 430502531121.

1211352050340 is a `hidden beast` number, since 1 + 2 + 1 + 135 + 20 + 503 + 4 + 0 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 157435 + ... + 1564445.

It is an arithmetic number, because the mean of its divisors is an integer number (51044519344).

Almost surely, 2^{1211352050340} is an apocalyptic number.

1211352050340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211352050340 is an abundant number, since it is smaller than the sum of its proper divisors (2463853342428).

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

1211352050340 is a wasteful number, since it uses less digits than its factorization.

1211352050340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1411809 (or 1411804 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 1211352050340 its reverse (430502531121), we get a palindrome (1641854581461).

The spelling of 1211352050340 in words is "one trillion, two hundred eleven billion, three hundred fifty-two million, fifty thousand, three hundred forty".