100551520213 has 2 divisors, whose sum is σ = 100551520214. Its totient is φ = 100551520212.

The previous prime is 100551520193. The next prime is 100551520231. The reversal of 100551520213 is 312025155001.

Together with next prime (100551520231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54497501809 + 46054018404 = 233447^2 + 214602^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100551520213 is a prime.

It is a super-2 number, since 2×100551520213² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100551520273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50275760106 + 50275760107.

It is an arithmetic number, because the mean of its divisors is an integer number (50275760107).

Almost surely, 2^100551520213 is an apocalyptic number.

It is an amenable number.

100551520213 is a deficient number, since it is larger than the sum of its proper divisors (1).

100551520213 is an equidigital number, since it uses as much as digits as its factorization.

100551520213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1500, while the sum is 25.

Adding to 100551520213 its reverse (312025155001), we get a palindrome (412576675214).

The spelling of 100551520213 in words is "one hundred billion, five hundred fifty-one million, five hundred twenty thousand, two hundred thirteen".