20320221002 has 8 divisors (see below), whose sum is σ = 30491700096. Its totient is φ = 10156320972.

The previous prime is 20320221001. The next prime is 20320221011. The reversal of 20320221002 is 20012202302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20320221002² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20320221001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1888058 + ... + 1898789.

It is an arithmetic number, because the mean of its divisors is an integer number (3811462512).

Almost surely, 2^20320221002 is an apocalyptic number.

20320221002 is a deficient number, since it is larger than the sum of its proper divisors (10171479094).

20320221002 is a wasteful number, since it uses less digits than its factorization.

20320221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3789532.

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

Adding to 20320221002 its reverse (20012202302), we get a palindrome (40332423304).

The spelling of 20320221002 in words is "twenty billion, three hundred twenty million, two hundred twenty-one thousand, two".