1101131313021 has 20 divisors (see below), whose sum is σ = 1645255004800. Its totient is φ = 733929048936.

The previous prime is 1101131312993. The next prime is 1101131313049. The reversal of 1101131313021 is 1203131311011.

It is an interprime number because it is at equal distance from previous prime (1101131312993) and next prime (1101131313049).

It is not a de Polignac number, because 1101131313021 - 2⁹ = 1101131312509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1101131312985 and 1101131313003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101131313071) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1089451 + ... + 1840968.

It is an arithmetic number, because the mean of its divisors is an integer number (82262750240).

Almost surely, 2^{1101131313021} is an apocalyptic number.

It is an amenable number.

1101131313021 is a deficient number, since it is larger than the sum of its proper divisors (544123691779).

1101131313021 is an equidigital number, since it uses as much as digits as its factorization.

1101131313021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2935070 (or 2935061 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 1101131313021 its reverse (1203131311011), we get a palindrome (2304262624032).

The spelling of 1101131313021 in words is "one trillion, one hundred one billion, one hundred thirty-one million, three hundred thirteen thousand, twenty-one".