21130153343 has 4 divisors (see below), whose sum is σ = 22755549768. Its totient is φ = 19504756920.

The previous prime is 21130153307. The next prime is 21130153379. The reversal of 21130153343 is 34335103112.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (21130153307) and next prime (21130153379).

It is a cyclic number.

It is not a de Polignac number, because 21130153343 - 2¹⁰ = 21130152319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21130153643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 812698193 + ... + 812698218.

It is an arithmetic number, because the mean of its divisors is an integer number (5688887442).

Almost surely, 2^21130153343 is an apocalyptic number.

21130153343 is a deficient number, since it is larger than the sum of its proper divisors (1625396425).

21130153343 is a wasteful number, since it uses less digits than its factorization.

21130153343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625396424.

The product of its (nonzero) digits is 3240, while the sum is 26.

Adding to 21130153343 its reverse (34335103112), we get a palindrome (55465256455).

The spelling of 21130153343 in words is "twenty-one billion, one hundred thirty million, one hundred fifty-three thousand, three hundred forty-three".