65213122 has 16 divisors (see below), whose sum is σ = 111541752. Its totient is φ = 28327680.

The previous prime is 65213089. The next prime is 65213123. The reversal of 65213122 is 22131256.

It can be written as a sum of positive squares in 4 ways, for example, as 35390601 + 29822521 = 5949^2 + 5461^2 .

It is a junction number, because it is equal to n+sod(n) for n = 65213093 and 65213102.

It is not an unprimeable number, because it can be changed into a prime (65213123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73329 + ... + 74212.

Almost surely, 2^65213122 is an apocalyptic number.

65213122 is a deficient number, since it is larger than the sum of its proper divisors (46328630).

65213122 is a wasteful number, since it uses less digits than its factorization.

65213122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147573.

The product of its digits is 720, while the sum is 22.

The square root of 65213122 is about 8075.4641971840. The cubic root of 65213122 is about 402.5115349754.

Adding to 65213122 its reverse (22131256), we get a palindrome (87344378).

The spelling of 65213122 in words is "sixty-five million, two hundred thirteen thousand, one hundred twenty-two".