220021012008 has 48 divisors (see below), whose sum is σ = 681017419680. Its totient is φ = 62863146144.

The previous prime is 220021011989. The next prime is 220021012009. The reversal of 220021012008 is 800210120022.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (220021012009) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 218274310 + ... + 218275317.

It is an arithmetic number, because the mean of its divisors is an integer number (14187862910).

Almost surely, 2^220021012008 is an apocalyptic number.

220021012008 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

220021012008 is an abundant number, since it is smaller than the sum of its proper divisors (460996407672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220021012008 is a wasteful number, since it uses less digits than its factorization.

220021012008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436549646 (or 436549639 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The spelling of 220021012008 in words is "two hundred twenty billion, twenty-one million, twelve thousand, eight".