100220513 has 2 divisors, whose sum is σ = 100220514. Its totient is φ = 100220512.

The previous prime is 100220507. The next prime is 100220537. The reversal of 100220513 is 315022001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57866449 + 42354064 = 7607^2 + 6508^2 .

It is a cyclic number.

It is not a de Polignac number, because 100220513 - 2⁸ = 100220257 is a prime.

It is not a weakly prime, because it can be changed into another prime (100220563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50110256 + 50110257.

It is an arithmetic number, because the mean of its divisors is an integer number (50110257).

Almost surely, 2^100220513 is an apocalyptic number.

It is an amenable number.

100220513 is a deficient number, since it is larger than the sum of its proper divisors (1).

100220513 is an equidigital number, since it uses as much as digits as its factorization.

100220513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 100220513 is about 10011.0195784445. The cubic root of 100220513 is about 464.4998097811.

Adding to 100220513 its reverse (315022001), we get a palindrome (415242514).

The spelling of 100220513 in words is "one hundred million, two hundred twenty thousand, five hundred thirteen".