2101610722 has 4 divisors (see below), whose sum is σ = 3152416086. Its totient is φ = 1050805360.

The previous prime is 2101610711. The next prime is 2101610723. The reversal of 2101610722 is 2270161012.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 2020412601 + 81198121 = 44949^2 + 9011^2 .

It is a super-2 number, since 2×2101610722² = 8833535253650722568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2101610693 and 2101610702.

It is not an unprimeable number, because it can be changed into a prime (2101610723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525402679 + ... + 525402682.

Almost surely, 2^2101610722 is an apocalyptic number.

2101610722 is a deficient number, since it is larger than the sum of its proper divisors (1050805364).

2101610722 is a wasteful number, since it uses less digits than its factorization.

2101610722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050805363.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 2101610722 is about 45843.3279987394. The cubic root of 2101610722 is about 1280.9064871936.

Adding to 2101610722 its reverse (2270161012), we get a palindrome (4371771734).

The spelling of 2101610722 in words is "two billion, one hundred one million, six hundred ten thousand, seven hundred twenty-two".