20021122110212 has 6 divisors (see below), whose sum is σ = 35036963692878. Its totient is φ = 10010561055104.

The previous prime is 20021122110167. The next prime is 20021122110251. The reversal of 20021122110212 is 21201122112002.

It can be written as a sum of positive squares in only one way, i.e., 19704934072576 + 316188037636 = 4439024^2 + 562306^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2502640263773 + ... + 2502640263780.

It is an arithmetic number, because the mean of its divisors is an integer number (5839493948813).

Almost surely, 2^{20021122110212} is an apocalyptic number.

It is an amenable number.

20021122110212 is a deficient number, since it is larger than the sum of its proper divisors (15015841582666).

20021122110212 is a wasteful number, since it uses less digits than its factorization.

20021122110212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5005280527557 (or 5005280527555 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20021122110212 its reverse (21201122112002), we get a palindrome (41222244222214).

The spelling of 20021122110212 in words is "twenty trillion, twenty-one billion, one hundred twenty-two million, one hundred ten thousand, two hundred twelve".