5250221111 has 2 divisors, whose sum is σ = 5250221112. Its totient is φ = 5250221110.

The previous prime is 5250221107. The next prime is 5250221117. The reversal of 5250221111 is 1111220525.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5250221111 - 2² = 5250221107 is a prime.

It is a super-4 number, since 4×5250221111⁴ (a number of 40 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5250221117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2625110555 + 2625110556.

It is an arithmetic number, because the mean of its divisors is an integer number (2625110556).

Almost surely, 2^5250221111 is an apocalyptic number.

5250221111 is a deficient number, since it is larger than the sum of its proper divisors (1).

5250221111 is an equidigital number, since it uses as much as digits as its factorization.

5250221111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 5250221111 is about 72458.4095257410. The cubic root of 5250221111 is about 1738.0377217111.

Adding to 5250221111 its reverse (1111220525), we get a palindrome (6361441636).

The spelling of 5250221111 in words is "five billion, two hundred fifty million, two hundred twenty-one thousand, one hundred eleven".