20020032221 has 16 divisors (see below), whose sum is σ = 24063740928. Its totient is φ = 16293139200.

The previous prime is 20020032203. The next prime is 20020032239. The reversal of 20020032221 is 12223002002.

It is an interprime number because it is at equal distance from previous prime (20020032203) and next prime (20020032239).

It is a cyclic number.

It is not a de Polignac number, because 20020032221 - 2¹⁴ = 20020015837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20020032196 and 20020032205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020032121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 858860 + ... + 881861.

It is an arithmetic number, because the mean of its divisors is an integer number (1503983808).

Almost surely, 2^20020032221 is an apocalyptic number.

It is an amenable number.

20020032221 is a deficient number, since it is larger than the sum of its proper divisors (4043708707).

20020032221 is a wasteful number, since it uses less digits than its factorization.

20020032221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740812.

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 20020032221 its reverse (12223002002), we get a palindrome (32243034223).

The spelling of 20020032221 in words is "twenty billion, twenty million, thirty-two thousand, two hundred twenty-one".