9921343411 has 64 divisors (see below), whose sum is σ = 12831621120. Its totient is φ = 7475846400.

The previous prime is 9921343379. The next prime is 9921343483. The reversal of 9921343411 is 1143431299.

It is a happy number.

It is not a de Polignac number, because 9921343411 - 2⁵ = 9921343379 is a prime.

It is a super-2 number, since 2×9921343411² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9921340411) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21709495 + ... + 21709951.

It is an arithmetic number, because the mean of its divisors is an integer number (200494080).

Almost surely, 2^9921343411 is an apocalyptic number.

9921343411 is a deficient number, since it is larger than the sum of its proper divisors (2910277709).

9921343411 is a wasteful number, since it uses less digits than its factorization.

9921343411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704.

The product of its digits is 23328, while the sum is 37.

The square root of 9921343411 is about 99605.9406411083. The cubic root of 9921343411 is about 2148.7711319707.

The spelling of 9921343411 in words is "nine billion, nine hundred twenty-one million, three hundred forty-three thousand, four hundred eleven".