501100101023 has 2 divisors, whose sum is σ = 501100101024. Its totient is φ = 501100101022.

The previous prime is 501100100981. The next prime is 501100101083. The reversal of 501100101023 is 320101001105.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-501100101023 is a prime.

It is a super-2 number, since 2×501100101023² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 501100100989 and 501100101007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (501100101083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250550050511 + 250550050512.

It is an arithmetic number, because the mean of its divisors is an integer number (250550050512).

Almost surely, 2^501100101023 is an apocalyptic number.

501100101023 is a deficient number, since it is larger than the sum of its proper divisors (1).

501100101023 is an equidigital number, since it uses as much as digits as its factorization.

501100101023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30, while the sum is 14.

Adding to 501100101023 its reverse (320101001105), we get a palindrome (821201102128).

The spelling of 501100101023 in words is "five hundred one billion, one hundred million, one hundred one thousand, twenty-three".