1101212109999 has 6 divisors (see below), whose sum is σ = 1590639714456. Its totient is φ = 734141406660.

The previous prime is 1101212109973. The next prime is 1101212110087. The reversal of 1101212109999 is 9999012121011.

It is not a de Polignac number, because 1101212109999 - 2⁸ = 1101212109743 is a prime.

It is a super-2 number, since 2×1101212109999² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101212109299) 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 5 ways as a sum of consecutive naturals, for example, 61178450547 + ... + 61178450564.

It is an arithmetic number, because the mean of its divisors is an integer number (265106619076).

Almost surely, 2^{1101212109999} is an apocalyptic number.

1101212109999 is a deficient number, since it is larger than the sum of its proper divisors (489427604457).

1101212109999 is a wasteful number, since it uses less digits than its factorization.

1101212109999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122356901117 (or 122356901114 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 45.

The spelling of 1101212109999 in words is "one trillion, one hundred one billion, two hundred twelve million, one hundred nine thousand, nine hundred ninety-nine".