20234234421 has 12 divisors (see below), whose sum is σ = 29706363180. Its totient is φ = 13268350080.

The previous prime is 20234234353. The next prime is 20234234441. The reversal of 20234234421 is 12443243202.

20234234421 is a `hidden beast` number, since 2 + 0 + 2 + 3 + 4 + 234 + 421 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3955026321 + 16279208100 = 62889^2 + 127590^2 .

It is not a de Polignac number, because 20234234421 - 2⁹ = 20234233909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20234234441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18427716 + ... + 18428813.

It is an arithmetic number, because the mean of its divisors is an integer number (2475530265).

Almost surely, 2^20234234421 is an apocalyptic number.

It is an amenable number.

20234234421 is a deficient number, since it is larger than the sum of its proper divisors (9472128759).

20234234421 is a wasteful number, since it uses less digits than its factorization.

20234234421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36856596 (or 36856593 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 20234234421 its reverse (12443243202), we get a palindrome (32677477623).

The spelling of 20234234421 in words is "twenty billion, two hundred thirty-four million, two hundred thirty-four thousand, four hundred twenty-one".