20121020222 has 32 divisors (see below), whose sum is σ = 30968840160. Its totient is φ = 9801907200.

The previous prime is 20121020173. The next prime is 20121020237. The reversal of 20121020222 is 22202012102.

It is a junction number, because it is equal to n+sod(n) for n = 20121020197 and 20121020206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7710854 + ... + 7713462.

It is an arithmetic number, because the mean of its divisors is an integer number (967776255).

Almost surely, 2^20121020222 is an apocalyptic number.

20121020222 is a deficient number, since it is larger than the sum of its proper divisors (10847819938).

20121020222 is a wasteful number, since it uses less digits than its factorization.

20121020222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3308.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20121020222 its reverse (22202012102), we get a palindrome (42323032324).

The spelling of 20121020222 in words is "twenty billion, one hundred twenty-one million, twenty thousand, two hundred twenty-two".