1113210215541 has 16 divisors (see below), whose sum is σ = 1649226902400. Its totient is φ = 742128181344.

The previous prime is 1113210215531. The next prime is 1113210215549. The reversal of 1113210215541 is 1455120123111.

1113210215541 is a `hidden beast` number, since 1 + 1 + 1 + 3 + 2 + 102 + 1 + 554 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-1113210215541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113210215549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1572280 + ... + 2167598.

It is an arithmetic number, because the mean of its divisors is an integer number (103076681400).

Almost surely, 2^{1113210215541} is an apocalyptic number.

It is an amenable number.

1113210215541 is a deficient number, since it is larger than the sum of its proper divisors (536016686859).

1113210215541 is an equidigital number, since it uses as much as digits as its factorization.

1113210215541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664585 (or 664579 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

Adding to 1113210215541 its reverse (1455120123111), we get a palindrome (2568330338652).

The spelling of 1113210215541 in words is "one trillion, one hundred thirteen billion, two hundred ten million, two hundred fifteen thousand, five hundred forty-one".