20020221332 has 24 divisors (see below), whose sum is σ = 35858592000. Its totient is φ = 9775835360.

The previous prime is 20020221307. The next prime is 20020221367. The reversal of 20020221332 is 23312202002.

It is a self number, because there is not a number n which added to its sum of digits gives 20020221332.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28832 + ... + 202167.

It is an arithmetic number, because the mean of its divisors is an integer number (1494108000).

Almost surely, 2^20020221332 is an apocalyptic number.

It is an amenable number.

20020221332 is a deficient number, since it is larger than the sum of its proper divisors (15838370668).

20020221332 is a wasteful number, since it uses less digits than its factorization.

20020221332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231511 (or 231509 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 20020221332 its reverse (23312202002), we get a palindrome (43332423334).

The spelling of 20020221332 in words is "twenty billion, twenty million, two hundred twenty-one thousand, three hundred thirty-two".