20021223332 has 24 divisors (see below), whose sum is σ = 38573008320. Its totient is φ = 9017062560.

The previous prime is 20021223317. The next prime is 20021223349. The reversal of 20021223332 is 23332212002.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2082488 + ... + 2092079.

It is an arithmetic number, because the mean of its divisors is an integer number (1607208680).

Almost surely, 2^20021223332 is an apocalyptic number.

20021223332 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20021223332 is a deficient number, since it is larger than the sum of its proper divisors (18551784988).

20021223332 is a wasteful number, since it uses less digits than its factorization.

20021223332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4174691 (or 4174689 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 20021223332 its reverse (23332212002), we get a palindrome (43353435334).

The spelling of 20021223332 in words is "twenty billion, twenty-one million, two hundred twenty-three thousand, three hundred thirty-two".