1321043110101 has 96 divisors (see below), whose sum is σ = 2301407821440. Its totient is φ = 719462246400.

The previous prime is 1321043110087. The next prime is 1321043110133. The reversal of 1321043110101 is 1010113401231.

It is a happy number.

1321043110101 is a `hidden beast` number, since 1 + 3 + 210 + 431 + 10 + 10 + 1 = 666.

It is not a de Polignac number, because 1321043110101 - 2⁷ = 1321043109973 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321043112101) 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 95 ways as a sum of consecutive naturals, for example, 24615385 + ... + 24668993.

It is an arithmetic number, because the mean of its divisors is an integer number (23972998140).

Almost surely, 2^{1321043110101} is an apocalyptic number.

1321043110101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1321043110101 is a deficient number, since it is larger than the sum of its proper divisors (980364711339).

1321043110101 is a wasteful number, since it uses less digits than its factorization.

1321043110101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54147 (or 54144 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1321043110101 its reverse (1010113401231), we get a palindrome (2331156511332).

The spelling of 1321043110101 in words is "one trillion, three hundred twenty-one billion, forty-three million, one hundred ten thousand, one hundred one".