20222221210 has 8 divisors (see below), whose sum is σ = 36399998196. Its totient is φ = 8088888480.

The previous prime is 20222221127. The next prime is 20222221211. The reversal of 20222221210 is 1212222202.

It can be written as a sum of positive squares in 2 ways, for example, as 19903848561 + 318372649 = 141081^2 + 17843^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20222221211) 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, 1011111051 + ... + 1011111070.

Almost surely, 2^20222221210 is an apocalyptic number.

20222221210 is a deficient number, since it is larger than the sum of its proper divisors (16177776986).

20222221210 is a wasteful number, since it uses less digits than its factorization.

20222221210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2022222128.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20222221210 its reverse (1212222202), we get a palindrome (21434443412).

The spelling of 20222221210 in words is "twenty billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred ten".