981342121411 has 4 divisors (see below), whose sum is σ = 1024009170192. Its totient is φ = 938675072632.

The previous prime is 981342121337. The next prime is 981342121423. The reversal of 981342121411 is 114121243189.

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

It is a cyclic number.

It is not a de Polignac number, because 981342121411 - 2⁷ = 981342121283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (981342121211) 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, 21333524356 + ... + 21333524401.

It is an arithmetic number, because the mean of its divisors is an integer number (256002292548).

Almost surely, 2^981342121411 is an apocalyptic number.

981342121411 is a deficient number, since it is larger than the sum of its proper divisors (42667048781).

981342121411 is a wasteful number, since it uses less digits than its factorization.

981342121411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42667048780.

The product of its digits is 13824, while the sum is 37.

The spelling of 981342121411 in words is "nine hundred eighty-one billion, three hundred forty-two million, one hundred twenty-one thousand, four hundred eleven".