20662221032 has 16 divisors (see below), whose sum is σ = 38744878500. Its totient is φ = 10330253440.

The previous prime is 20662221007. The next prime is 20662221089. The reversal of 20662221032 is 23012226602.

It can be written as a sum of positive squares in 2 ways, for example, as 14221516516 + 6440704516 = 119254^2 + 80254^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20662220992 and 20662221010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1844 + ... + 203292.

Almost surely, 2^20662221032 is an apocalyptic number.

It is an amenable number.

20662221032 is a deficient number, since it is larger than the sum of its proper divisors (18082657468).

20662221032 is a wasteful number, since it uses less digits than its factorization.

20662221032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214276 (or 214272 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 20662221032 its reverse (23012226602), we get a palindrome (43674447634).

The spelling of 20662221032 in words is "twenty billion, six hundred sixty-two million, two hundred twenty-one thousand, thirty-two".