20021000002222 has 4 divisors (see below), whose sum is σ = 30031500003336. Its totient is φ = 10010500001110.

The previous prime is 20021000002217. The next prime is 20021000002231. The reversal of 20021000002222 is 22220000012002.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005250000554 + ... + 5005250000557.

It is an arithmetic number, because the mean of its divisors is an integer number (7507875000834).

Almost surely, 2^{20021000002222} is an apocalyptic number.

20021000002222 is a deficient number, since it is larger than the sum of its proper divisors (10010500001114).

20021000002222 is a wasteful number, since it uses less digits than its factorization.

20021000002222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10010500001113.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 20021000002222 its reverse (22220000012002), we get a palindrome (42241000014224).

The spelling of 20021000002222 in words is "twenty trillion, twenty-one billion, two thousand, two hundred twenty-two".