1100212258885 has 4 divisors (see below), whose sum is σ = 1320254710668. Its totient is φ = 880169807104.

The previous prime is 1100212258883. The next prime is 1100212258889. The reversal of 1100212258885 is 5888522120011.

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

It can be written as a sum of positive squares in 2 ways, for example, as 587145192516 + 513067066369 = 766254^2 + 716287^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100212258885 - 2¹ = 1100212258883 is a prime.

It is a super-2 number, since 2×1100212258885² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100212258883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110021225884 + ... + 110021225893.

It is an arithmetic number, because the mean of its divisors is an integer number (330063677667).

Almost surely, 2^{1100212258885} is an apocalyptic number.

It is an amenable number.

1100212258885 is a deficient number, since it is larger than the sum of its proper divisors (220042451783).

1100212258885 is an equidigital number, since it uses as much as digits as its factorization.

1100212258885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220042451782.

The product of its (nonzero) digits is 102400, while the sum is 43.

Adding to 1100212258885 its reverse (5888522120011), we get a palindrome (6988734378896).

The spelling of 1100212258885 in words is "one trillion, one hundred billion, two hundred twelve million, two hundred fifty-eight thousand, eight hundred eighty-five".