1121212212101 has 8 divisors (see below), whose sum is σ = 1147355461824. Its totient is φ = 1095072078240.

The previous prime is 1121212212089. The next prime is 1121212212137. The reversal of 1121212212101 is 1012122121211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121212212101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121212212101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121212218101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42881 + ... + 1498086.

It is an arithmetic number, because the mean of its divisors is an integer number (143419432728).

Almost surely, 2^{1121212212101} is an apocalyptic number.

It is an amenable number.

1121212212101 is a deficient number, since it is larger than the sum of its proper divisors (26143249723).

1121212212101 is a wasteful number, since it uses less digits than its factorization.

1121212212101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557931.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1121212212101 its reverse (1012122121211), we get a palindrome (2133334333312).

The spelling of 1121212212101 in words is "one trillion, one hundred twenty-one billion, two hundred twelve million, two hundred twelve thousand, one hundred one".