220021012019 has 4 divisors (see below), whose sum is σ = 220065891696. Its totient is φ = 219976132344.

The previous prime is 220021012009. The next prime is 220021012033. The reversal of 220021012019 is 910210120022.

It is a happy number.

220021012019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220021012019 is a prime.

It is a super-2 number, since 2×220021012019² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

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 (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22432484 + ... + 22442289.

It is an arithmetic number, because the mean of its divisors is an integer number (55016472924).

Almost surely, 2^220021012019 is an apocalyptic number.

220021012019 is a deficient number, since it is larger than the sum of its proper divisors (44879677).

220021012019 is an equidigital number, since it uses as much as digits as its factorization.

220021012019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44879676.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 220021012019 in words is "two hundred twenty billion, twenty-one million, twelve thousand, nineteen".