9918211343411 has 32 divisors (see below), whose sum is σ = 11546163301248. Its totient is φ = 8344755302400.

The previous prime is 9918211343371. The next prime is 9918211343459. The reversal of 9918211343411 is 1143431128199.

It is a cyclic number.

It is not a de Polignac number, because 9918211343411 - 2²² = 9918207149107 is a prime.

It is a super-2 number, since 2×9918211343411² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9918211343461) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 43060925 + ... + 43290641.

It is an arithmetic number, because the mean of its divisors is an integer number (360817603164).

Almost surely, 2^{9918211343411} is an apocalyptic number.

9918211343411 is a deficient number, since it is larger than the sum of its proper divisors (1627951957837).

9918211343411 is a wasteful number, since it uses less digits than its factorization.

9918211343411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230351.

The product of its digits is 186624, while the sum is 47.

The spelling of 9918211343411 in words is "nine trillion, nine hundred eighteen billion, two hundred eleven million, three hundred forty-three thousand, four hundred eleven".