21000034412034 has 32 divisors (see below), whose sum is σ = 42793318220544. Its totient is φ = 6867808147200.

The previous prime is 21000034411933. The next prime is 21000034412059. The reversal of 21000034412034 is 43021443000012.

It is a super-2 number, since 2×21000034412034² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21000034411995 and 21000034412013.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17350087 + ... + 18520949.

It is an arithmetic number, because the mean of its divisors is an integer number (1337291194392).

Almost surely, 2^{21000034412034} is an apocalyptic number.

21000034412034 is an abundant number, since it is smaller than the sum of its proper divisors (21793283808510).

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

21000034412034 is a wasteful number, since it uses less digits than its factorization.

21000034412034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1227322.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21000034412034 its reverse (43021443000012), we get a palindrome (64021477412046).

The spelling of 21000034412034 in words is "twenty-one trillion, thirty-four million, four hundred twelve thousand, thirty-four".