21114323034 has 64 divisors (see below), whose sum is σ = 51443424000. Its totient is φ = 5639666688.

The previous prime is 21114322993. The next prime is 21114323039. The reversal of 21114323034 is 43032341112.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21114322995 and 21114323013.

It is not an unprimeable number, because it can be changed into a prime (21114323039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7152 + ... + 205620.

It is an arithmetic number, because the mean of its divisors is an integer number (803803500).

Almost surely, 2^21114323034 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21114323034, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25721712000).

21114323034 is an abundant number, since it is smaller than the sum of its proper divisors (30329100966).

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

21114323034 is a wasteful number, since it uses less digits than its factorization.

21114323034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198647.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21114323034 its reverse (43032341112), we get a palindrome (64146664146).

The spelling of 21114323034 in words is "twenty-one billion, one hundred fourteen million, three hundred twenty-three thousand, thirty-four".