220021011212 has 24 divisors (see below), whose sum is σ = 387440848704. Its totient is φ = 109325400912.

The previous prime is 220021011187. The next prime is 220021011227. The reversal of 220021011212 is 212110120022.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275183 + ... + 718169.

It is an arithmetic number, because the mean of its divisors is an integer number (16143368696).

Almost surely, 2^220021011212 is an apocalyptic number.

It is an amenable number.

220021011212 is a deficient number, since it is larger than the sum of its proper divisors (167419837492).

220021011212 is a wasteful number, since it uses less digits than its factorization.

220021011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443765 (or 443763 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 220021011212 its reverse (212110120022), we get a palindrome (432131131234).

The spelling of 220021011212 in words is "two hundred twenty billion, twenty-one million, eleven thousand, two hundred twelve".