5211202221 has 12 divisors (see below), whose sum is σ = 7687447872. Its totient is φ = 3400216776.

The previous prime is 5211202193. The next prime is 5211202259. The reversal of 5211202221 is 1222021125.

5211202221 is a `hidden beast` number, since 521 + 120 + 2 + 2 + 21 = 666.

It is not a de Polignac number, because 5211202221 - 2⁷ = 5211202093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5211202194 and 5211202203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5211202261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6159391 + ... + 6160236.

It is an arithmetic number, because the mean of its divisors is an integer number (640620656).

Almost surely, 2^5211202221 is an apocalyptic number.

It is an amenable number.

5211202221 is a deficient number, since it is larger than the sum of its proper divisors (2476245651).

5211202221 is a wasteful number, since it uses less digits than its factorization.

5211202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12319680 (or 12319677 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 5211202221 is about 72188.6571491671. The cubic root of 5211202221 is about 1733.7213955550.

Adding to 5211202221 its reverse (1222021125), we get a palindrome (6433223346).

The spelling of 5211202221 in words is "five billion, two hundred eleven million, two hundred two thousand, two hundred twenty-one".