5131222011 has 6 divisors (see below), whose sum is σ = 7411765140. Its totient is φ = 3420814668.

The previous prime is 5131222003. The next prime is 5131222027. The reversal of 5131222011 is 1102221315.

5131222011 is a `hidden beast` number, since 513 + 122 + 20 + 11 = 666.

It is not a de Polignac number, because 5131222011 - 2³ = 5131222003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5131222111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 285067881 + ... + 285067898.

It is an arithmetic number, because the mean of its divisors is an integer number (1235294190).

Almost surely, 2^5131222011 is an apocalyptic number.

5131222011 is a deficient number, since it is larger than the sum of its proper divisors (2280543129).

5131222011 is a wasteful number, since it uses less digits than its factorization.

5131222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570135785 (or 570135782 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 5131222011 is about 71632.5485446386. The cubic root of 5131222011 is about 1724.8060565825.

Adding to 5131222011 its reverse (1102221315), we get a palindrome (6233443326).

The spelling of 5131222011 in words is "five billion, one hundred thirty-one million, two hundred twenty-two thousand, eleven".