2126610601 has 4 divisors (see below), whose sum is σ = 2146120900. Its totient is φ = 2107100304.

The previous prime is 2126610593. The next prime is 2126610611. The reversal of 2126610601 is 1060166212.

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 702303001 + 1424307600 = 26501^2 + 37740^2 .

It is a cyclic number.

It is not a de Polignac number, because 2126610601 - 2³ = 2126610593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2126610611) 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, 9754986 + ... + 9755203.

It is an arithmetic number, because the mean of its divisors is an integer number (536530225).

Almost surely, 2^2126610601 is an apocalyptic number.

It is an amenable number.

2126610601 is a deficient number, since it is larger than the sum of its proper divisors (19510299).

2126610601 is a wasteful number, since it uses less digits than its factorization.

2126610601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19510298.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 2126610601 is about 46115.1883981840. The cubic root of 2126610601 is about 1285.9655218285.

Adding to 2126610601 its reverse (1060166212), we get a palindrome (3186776813).

The spelling of 2126610601 in words is "two billion, one hundred twenty-six million, six hundred ten thousand, six hundred one".