21213032444034 has 16 divisors (see below), whose sum is σ = 42459132763872. Its totient is φ = 7065499502048.

The previous prime is 21213032443987. The next prime is 21213032444047. The reversal of 21213032444034 is 43044423031212.

It is a junction number, because it is equal to n+sod(n) for n = 21213032443986 and 21213032444004.

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, 1377819819 + ... + 1377835214.

It is an arithmetic number, because the mean of its divisors is an integer number (2653695797742).

Almost surely, 2^{21213032444034} is an apocalyptic number.

21213032444034 is an abundant number, since it is smaller than the sum of its proper divisors (21246100319838).

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

21213032444034 is a wasteful number, since it uses less digits than its factorization.

21213032444034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2755656321.

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 21213032444034 its reverse (43044423031212), we get a palindrome (64257455475246).

The spelling of 21213032444034 in words is "twenty-one trillion, two hundred thirteen billion, thirty-two million, four hundred forty-four thousand, thirty-four".