1312211122011 has 24 divisors (see below), whose sum is σ = 1903170649536. Its totient is φ = 871231814640.

The previous prime is 1312211121943. The next prime is 1312211122021. The reversal of 1312211122011 is 1102211122131.

It is a happy number.

1312211122011 is a `hidden beast` number, since 131 + 221 + 112 + 201 + 1 = 666.

It is not a de Polignac number, because 1312211122011 - 2⁹ = 1312211121499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1312211122021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4470376 + ... + 4754858.

It is an arithmetic number, because the mean of its divisors is an integer number (79298777064).

Almost surely, 2^{1312211122011} is an apocalyptic number.

1312211122011 is a deficient number, since it is larger than the sum of its proper divisors (590959527525).

1312211122011 is a wasteful number, since it uses less digits than its factorization.

1312211122011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286583 (or 286580 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 1312211122011 its reverse (1102211122131), we get a palindrome (2414422244142).

The spelling of 1312211122011 in words is "one trillion, three hundred twelve billion, two hundred eleven million, one hundred twenty-two thousand, eleven".