110100012521 has 2 divisors, whose sum is σ = 110100012522. Its totient is φ = 110100012520.

The previous prime is 110100012499. The next prime is 110100012739. The reversal of 110100012521 is 125210001011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104119155625 + 5980856896 = 322675^2 + 77336^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110100012521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 110100012496 and 110100012505.

It is not a weakly prime, because it can be changed into another prime (110100012821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55050006260 + 55050006261.

It is an arithmetic number, because the mean of its divisors is an integer number (55050006261).

Almost surely, 2^110100012521 is an apocalyptic number.

It is an amenable number.

110100012521 is a deficient number, since it is larger than the sum of its proper divisors (1).

110100012521 is an equidigital number, since it uses as much as digits as its factorization.

110100012521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20, while the sum is 14.

Adding to 110100012521 its reverse (125210001011), we get a palindrome (235310013532).

The spelling of 110100012521 in words is "one hundred ten billion, one hundred million, twelve thousand, five hundred twenty-one".