21034120034 has 16 divisors (see below), whose sum is σ = 32983865280. Its totient is φ = 10041189840.

The previous prime is 21034120021. The next prime is 21034120061. The reversal of 21034120034 is 43002143012.

It is a super-2 number, since 2×21034120034² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21034119988 and 21034120015.

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, 397724 + ... + 447495.

It is an arithmetic number, because the mean of its divisors is an integer number (2061491580).

Almost surely, 2^21034120034 is an apocalyptic number.

21034120034 is a deficient number, since it is larger than the sum of its proper divisors (11949745246).

21034120034 is a wasteful number, since it uses less digits than its factorization.

21034120034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845785.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21034120034 its reverse (43002143012), we get a palindrome (64036263046).

The spelling of 21034120034 in words is "twenty-one billion, thirty-four million, one hundred twenty thousand, thirty-four".