104221511 has 2 divisors, whose sum is σ = 104221512. Its totient is φ = 104221510.

The previous prime is 104221499. The next prime is 104221519. The reversal of 104221511 is 115122401.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 104221511 - 2¹⁸ = 103959367 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 104221511.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104221519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52110755 + 52110756.

It is an arithmetic number, because the mean of its divisors is an integer number (52110756).

Almost surely, 2^104221511 is an apocalyptic number.

104221511 is a deficient number, since it is larger than the sum of its proper divisors (1).

104221511 is an equidigital number, since it uses as much as digits as its factorization.

104221511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 104221511 is about 10208.8937206732. The cubic root of 104221511 is about 470.6005767422.

Adding to 104221511 its reverse (115122401), we get a palindrome (219343912).

The spelling of 104221511 in words is "one hundred four million, two hundred twenty-one thousand, five hundred eleven".