21414422004 has 24 divisors (see below), whose sum is σ = 50065165920. Its totient is φ = 7124114784.

The previous prime is 21414421981. The next prime is 21414422027. The reversal of 21414422004 is 40022441412.

It is an interprime number because it is at equal distance from previous prime (21414421981) and next prime (21414422027).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1746874 + ... + 1759089.

It is an arithmetic number, because the mean of its divisors is an integer number (2086048580).

Almost surely, 2^21414422004 is an apocalyptic number.

It is an amenable number.

21414422004 is an abundant number, since it is smaller than the sum of its proper divisors (28650743916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21414422004 is a wasteful number, since it uses less digits than its factorization.

21414422004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3506479 (or 3506477 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 21414422004 its reverse (40022441412), we get a palindrome (61436863416).

The spelling of 21414422004 in words is "twenty-one billion, four hundred fourteen million, four hundred twenty-two thousand, four".