1216041023 has 2 divisors, whose sum is σ = 1216041024. Its totient is φ = 1216041022.

The previous prime is 1216040993. The next prime is 1216041103. The reversal of 1216041023 is 3201406121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1216041023 - 2⁸ = 1216040767 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1216040986 and 1216041004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1216341023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608020511 + 608020512.

It is an arithmetic number, because the mean of its divisors is an integer number (608020512).

Almost surely, 2^1216041023 is an apocalyptic number.

1216041023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1216041023 is an equidigital number, since it uses as much as digits as its factorization.

1216041023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1216041023 is about 34871.7797509677. The cubic root of 1216041023 is about 1067.3726621872.

Adding to 1216041023 its reverse (3201406121), we get a palindrome (4417447144).

The spelling of 1216041023 in words is "one billion, two hundred sixteen million, forty-one thousand, twenty-three".