20206221632 has 28 divisors (see below), whose sum is σ = 40121043456. Its totient is φ = 10096982400.

The previous prime is 20206221619. The next prime is 20206221643. The reversal of 20206221632 is 23612260202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11507 + ... + 201357.

Almost surely, 2^20206221632 is an apocalyptic number.

It is an amenable number.

20206221632 is a deficient number, since it is larger than the sum of its proper divisors (19914821824).

20206221632 is a wasteful number, since it uses less digits than its factorization.

20206221632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191526 (or 191516 counting only the distinct ones).

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

Adding to 20206221632 its reverse (23612260202), we get a palindrome (43818481834).

The spelling of 20206221632 in words is "twenty billion, two hundred six million, two hundred twenty-one thousand, six hundred thirty-two".