5221021031 has 4 divisors (see below), whose sum is σ = 5221777392. Its totient is φ = 5220264672.

The previous prime is 5221021009. The next prime is 5221021051. The reversal of 5221021031 is 1301201225.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 5221021031 - 2²⁶ = 5153912167 is a prime.

It is a super-2 number, since 2×5221021031² = 54518121212288605922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5221021051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367730 + ... + 381663.

It is an arithmetic number, because the mean of its divisors is an integer number (1305444348).

Almost surely, 2^5221021031 is an apocalyptic number.

5221021031 is a deficient number, since it is larger than the sum of its proper divisors (756361).

5221021031 is an equidigital number, since it uses as much as digits as its factorization.

5221021031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756360.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 5221021031 is about 72256.6331280388. The cubic root of 5221021031 is about 1734.8095897919.

Adding to 5221021031 its reverse (1301201225), we get a palindrome (6522222256).

The spelling of 5221021031 in words is "five billion, two hundred twenty-one million, twenty-one thousand, thirty-one".