2120101513 has 4 divisors (see below), whose sum is σ = 2171811348. Its totient is φ = 2068391680.

The previous prime is 2120101493. The next prime is 2120101519. The reversal of 2120101513 is 3151010212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30880249 + 2089221264 = 5557^2 + 45708^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120101513 - 2⁹ = 2120101001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120101519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25854856 + ... + 25854937.

It is an arithmetic number, because the mean of its divisors is an integer number (542952837).

Almost surely, 2^2120101513 is an apocalyptic number.

It is an amenable number.

2120101513 is a deficient number, since it is larger than the sum of its proper divisors (51709835).

2120101513 is an equidigital number, since it uses as much as digits as its factorization.

2120101513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51709834.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 2120101513 is about 46044.5600804264. The cubic root of 2120101513 is about 1284.6521616012.

Adding to 2120101513 its reverse (3151010212), we get a palindrome (5271111725).

The spelling of 2120101513 in words is "two billion, one hundred twenty million, one hundred one thousand, five hundred thirteen".