20500355222 has 16 divisors (see below), whose sum is σ = 30911270544. Its totient is φ = 10196700000.

The previous prime is 20500355219. The next prime is 20500355257. The reversal of 20500355222 is 22255300502.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20500355191 and 20500355200.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 387272 + ... + 437012.

It is an arithmetic number, because the mean of its divisors is an integer number (1931954409).

Almost surely, 2^20500355222 is an apocalyptic number.

20500355222 is a deficient number, since it is larger than the sum of its proper divisors (10410915322).

20500355222 is a wasteful number, since it uses less digits than its factorization.

20500355222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50815.

The product of its (nonzero) digits is 6000, while the sum is 26.

Adding to 20500355222 its reverse (22255300502), we get a palindrome (42755655724).

The spelling of 20500355222 in words is "twenty billion, five hundred million, three hundred fifty-five thousand, two hundred twenty-two".