20021022002222 has 4 divisors (see below), whose sum is σ = 30031533003336. Its totient is φ = 10010511001110.

The previous prime is 20021022002207. The next prime is 20021022002243. The reversal of 20021022002222 is 22220022012002.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20021022002222.

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, 5005255500554 + ... + 5005255500557.

It is an arithmetic number, because the mean of its divisors is an integer number (7507883250834).

Almost surely, 2^{20021022002222} is an apocalyptic number.

20021022002222 is a deficient number, since it is larger than the sum of its proper divisors (10010511001114).

20021022002222 is a wasteful number, since it uses less digits than its factorization.

20021022002222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10010511001113.

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 20021022002222 its reverse (22220022012002), we get a palindrome (42241044014224).

The spelling of 20021022002222 in words is "twenty trillion, twenty-one billion, twenty-two million, two thousand, two hundred twenty-two".