220021001007 has 4 divisors (see below), whose sum is σ = 293361334680. Its totient is φ = 146680667336.

The previous prime is 220021000999. The next prime is 220021001027. The reversal of 220021001007 is 700100120022.

220021001007 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 not a de Polignac number, because 220021001007 - 2³ = 220021000999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220021001027) 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, 36670166832 + ... + 36670166837.

It is an arithmetic number, because the mean of its divisors is an integer number (73340333670).

Almost surely, 2^220021001007 is an apocalyptic number.

220021001007 is a deficient number, since it is larger than the sum of its proper divisors (73340333673).

220021001007 is an equidigital number, since it uses as much as digits as its factorization.

220021001007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73340333672.

The product of its (nonzero) digits is 56, while the sum is 15.

Adding to 220021001007 its reverse (700100120022), we get a palindrome (920121121029).

The spelling of 220021001007 in words is "two hundred twenty billion, twenty-one million, one thousand, seven".