20426235212 has 6 divisors (see below), whose sum is σ = 35745911628. Its totient is φ = 10213117604.

The previous prime is 20426235211. The next prime is 20426235227. The reversal of 20426235212 is 21253262402.

It is not an unprimeable number, because it can be changed into a prime (20426235211) by changing a digit.

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 as a sum of consecutive naturals, namely, 2553279398 + ... + 2553279405.

It is an arithmetic number, because the mean of its divisors is an integer number (5957651938).

Almost surely, 2^20426235212 is an apocalyptic number.

It is an amenable number.

20426235212 is a deficient number, since it is larger than the sum of its proper divisors (15319676416).

20426235212 is a wasteful number, since it uses less digits than its factorization.

20426235212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5106558807 (or 5106558805 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 20426235212 its reverse (21253262402), we get a palindrome (41679497614).

The spelling of 20426235212 in words is "twenty billion, four hundred twenty-six million, two hundred thirty-five thousand, two hundred twelve".