1121998516839 has 12 divisors (see below), whose sum is σ = 1624274028000. Its totient is φ = 746333086464.

The previous prime is 1121998516819. The next prime is 1121998516879. The reversal of 1121998516839 is 9386158991211.

1121998516839 is a `hidden beast` number, since 1 + 1 + 21 + 9 + 98 + 516 + 8 + 3 + 9 = 666.

It is not a de Polignac number, because 1121998516839 - 2⁷ = 1121998516711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121998516819) 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 11 ways as a sum of consecutive naturals, for example, 138822799 + ... + 138830880.

It is an arithmetic number, because the mean of its divisors is an integer number (135356169000).

Almost surely, 2^{1121998516839} is an apocalyptic number.

1121998516839 is a deficient number, since it is larger than the sum of its proper divisors (502275511161).

1121998516839 is a wasteful number, since it uses less digits than its factorization.

1121998516839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277654134 (or 277654131 counting only the distinct ones).

The product of its digits is 8398080, while the sum is 63.

The spelling of 1121998516839 in words is "one trillion, one hundred twenty-one billion, nine hundred ninety-eight million, five hundred sixteen thousand, eight hundred thirty-nine".