20500222210 has 24 divisors (see below), whose sum is σ = 39957241140. Its totient is φ = 7569312192.

The previous prime is 20500222201. The next prime is 20500222231. The reversal of 20500222210 is 1222200502.

20500222210 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 1733140161 + 18767082049 = 41631^2 + 136993^2 .

It is a super-2 number, since 2×20500222210² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6063465 + ... + 6066844.

Almost surely, 2^20500222210 is an apocalyptic number.

20500222210 is a deficient number, since it is larger than the sum of its proper divisors (19457018930).

20500222210 is a wasteful number, since it uses less digits than its factorization.

20500222210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12130342 (or 12130329 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

Adding to 20500222210 its reverse (1222200502), we get a palindrome (21722422712).

The spelling of 20500222210 in words is "twenty billion, five hundred million, two hundred twenty-two thousand, two hundred ten".