1312020312021 has 48 divisors (see below), whose sum is σ = 2065088323584. Its totient is φ = 799332613632.

The previous prime is 1312020312007. The next prime is 1312020312023. The reversal of 1312020312021 is 1202130202131.

1312020312021 is a `hidden beast` number, since 1 + 312 + 0 + 20 + 312 + 0 + 21 = 666.

It is not a de Polignac number, because 1312020312021 - 2⁶ = 1312020311957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1312020311985 and 1312020312003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312020312023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2518956 + ... + 2994858.

It is an arithmetic number, because the mean of its divisors is an integer number (43022673408).

Almost surely, 2^{1312020312021} is an apocalyptic number.

It is an amenable number.

1312020312021 is a deficient number, since it is larger than the sum of its proper divisors (753068011563).

1312020312021 is a wasteful number, since it uses less digits than its factorization.

1312020312021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476450 (or 476447 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1312020312021 its reverse (1202130202131), we get a palindrome (2514150514152).

The spelling of 1312020312021 in words is "one trillion, three hundred twelve billion, twenty million, three hundred twelve thousand, twenty-one".