20021000222 has 8 divisors (see below), whose sum is σ = 31067069400. Its totient is φ = 9665310424.

The previous prime is 20021000201. The next prime is 20021000267. The reversal of 20021000222 is 22200012002.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172594772 + ... + 172594887.

It is an arithmetic number, because the mean of its divisors is an integer number (3883383675).

Almost surely, 2^20021000222 is an apocalyptic number.

20021000222 is a deficient number, since it is larger than the sum of its proper divisors (11046069178).

20021000222 is a wasteful number, since it uses less digits than its factorization.

20021000222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345189690.

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 20021000222 its reverse (22200012002), we get a palindrome (42221012224).

The spelling of 20021000222 in words is "twenty billion, twenty-one million, two hundred twenty-two", and thus it is an aban number.