21001424441034 has 16 divisors (see below), whose sum is σ = 42003332645472. Its totient is φ = 7000394186448.

The previous prime is 21001424441029. The next prime is 21001424441069. The reversal of 21001424441034 is 43014442410012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21001424440992 and 21001424441010.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19591224 + ... + 20635379.

It is an arithmetic number, because the mean of its divisors is an integer number (2625208290342).

Almost surely, 2^{21001424441034} is an apocalyptic number.

21001424441034 is an abundant number, since it is smaller than the sum of its proper divisors (21001908204438).

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

21001424441034 is a wasteful number, since it uses less digits than its factorization.

21001424441034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40313621.

The product of its (nonzero) digits is 12288, while the sum is 30.

Adding to 21001424441034 its reverse (43014442410012), we get a palindrome (64015866851046).

The spelling of 21001424441034 in words is "twenty-one trillion, one billion, four hundred twenty-four million, four hundred forty-one thousand, thirty-four".