1211332001013 has 48 divisors (see below), whose sum is σ = 1865086606656. Its totient is φ = 754947463680.

The previous prime is 1211332001003. The next prime is 1211332001021. The reversal of 1211332001013 is 3101002331121.

It is not a de Polignac number, because 1211332001013 - 2²⁰ = 1211330952437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211332001003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28856706 + ... + 28898652.

It is an arithmetic number, because the mean of its divisors is an integer number (38855970972).

Almost surely, 2^{1211332001013} is an apocalyptic number.

It is an amenable number.

1211332001013 is a deficient number, since it is larger than the sum of its proper divisors (653754605643).

1211332001013 is a wasteful number, since it uses less digits than its factorization.

1211332001013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43234 (or 43231 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1211332001013 its reverse (3101002331121), we get a palindrome (4312334332134).

The spelling of 1211332001013 in words is "one trillion, two hundred eleven billion, three hundred thirty-two million, one thousand, thirteen".