21052141234 has 8 divisors (see below), whose sum is σ = 31619929068. Its totient is φ = 10512164880.

The previous prime is 21052141213. The next prime is 21052141241. The reversal of 21052141234 is 43214125012.

21052141234 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 19670904009 + 1381237225 = 140253^2 + 37165^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 21052141199 and 21052141208.

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 3 ways as a sum of consecutive naturals, for example, 6950977 + ... + 6954004.

Almost surely, 2^21052141234 is an apocalyptic number.

21052141234 is a deficient number, since it is larger than the sum of its proper divisors (10567787834).

21052141234 is a wasteful number, since it uses less digits than its factorization.

21052141234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13905740.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 21052141234 its reverse (43214125012), we get a palindrome (64266266246).

The spelling of 21052141234 in words is "twenty-one billion, fifty-two million, one hundred forty-one thousand, two hundred thirty-four".