1211321334 has 16 divisors (see below), whose sum is σ = 2423441088. Its totient is φ = 403640712.

The previous prime is 1211321327. The next prime is 1211321359. The reversal of 1211321334 is 4331231121.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1211321334.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12552 + ... + 50795.

It is an arithmetic number, because the mean of its divisors is an integer number (151465068).

Almost surely, 2^1211321334 is an apocalyptic number.

1211321334 is an abundant number, since it is smaller than the sum of its proper divisors (1212119754).

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

1211321334 is a wasteful number, since it uses less digits than its factorization.

1211321334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66539.

The product of its digits is 432, while the sum is 21.

The square root of 1211321334 is about 34804.0419204437. The cubic root of 1211321334 is about 1065.9899789851.

Adding to 1211321334 its reverse (4331231121), we get a palindrome (5542552455).

The spelling of 1211321334 in words is "one billion, two hundred eleven million, three hundred twenty-one thousand, three hundred thirty-four".