20004011421 has 32 divisors (see below), whose sum is σ = 28760309760. Its totient is φ = 12331440000.

The previous prime is 20004011411. The next prime is 20004011431. The reversal of 20004011421 is 12411040002.

It is an interprime number because it is at equal distance from previous prime (20004011411) and next prime (20004011431).

It is not a de Polignac number, because 20004011421 - 2¹⁷ = 20003880349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20004011421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20004011411) 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 in 31 ways as a sum of consecutive naturals, for example, 2217921 + ... + 2226921.

It is an arithmetic number, because the mean of its divisors is an integer number (898759680).

Almost surely, 2^20004011421 is an apocalyptic number.

It is an amenable number.

20004011421 is a deficient number, since it is larger than the sum of its proper divisors (8756298339).

20004011421 is a wasteful number, since it uses less digits than its factorization.

20004011421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10097.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20004011421 its reverse (12411040002), we get a palindrome (32415051423).

The spelling of 20004011421 in words is "twenty billion, four million, eleven thousand, four hundred twenty-one".