20331421107 has 16 divisors (see below), whose sum is σ = 27646112160. Its totient is φ = 13285988352.

The previous prime is 20331421081. The next prime is 20331421111. The reversal of 20331421107 is 70112413302.

It is a happy number.

It is not a de Polignac number, because 20331421107 - 2⁶ = 20331421043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20331421127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110163 + ... + 229779.

It is an arithmetic number, because the mean of its divisors is an integer number (1727882010).

Almost surely, 2^20331421107 is an apocalyptic number.

20331421107 is a deficient number, since it is larger than the sum of its proper divisors (7314691053).

20331421107 is a wasteful number, since it uses less digits than its factorization.

20331421107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120742.

The product of its (nonzero) digits is 1008, while the sum is 24.

Adding to 20331421107 its reverse (70112413302), we get a palindrome (90443834409).

The spelling of 20331421107 in words is "twenty billion, three hundred thirty-one million, four hundred twenty-one thousand, one hundred seven".