20103344421 has 32 divisors (see below), whose sum is σ = 29077587840. Its totient is φ = 12311149824.

The previous prime is 20103344413. The next prime is 20103344467. The reversal of 20103344421 is 12444330102.

It is not a de Polignac number, because 20103344421 - 2³ = 20103344413 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20103344391 and 20103344400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103344491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 601671 + ... + 634203.

It is an arithmetic number, because the mean of its divisors is an integer number (908674620).

Almost surely, 2^20103344421 is an apocalyptic number.

It is an amenable number.

20103344421 is a deficient number, since it is larger than the sum of its proper divisors (8974243419).

20103344421 is a wasteful number, since it uses less digits than its factorization.

20103344421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32885.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 20103344421 its reverse (12444330102), we get a palindrome (32547674523).

The spelling of 20103344421 in words is "twenty billion, one hundred three million, three hundred forty-four thousand, four hundred twenty-one".