1123212212101 has 16 divisors (see below), whose sum is σ = 1290866772096. Its totient is φ = 957361720896.

The previous prime is 1123212212033. The next prime is 1123212212117. The reversal of 1123212212101 is 1012122123211.

It is not a de Polignac number, because 1123212212101 - 2³¹ = 1121064728453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123212212141) 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 15 ways as a sum of consecutive naturals, for example, 2416195 + ... + 2843311.

It is an arithmetic number, because the mean of its divisors is an integer number (80679173256).

Almost surely, 2^{1123212212101} is an apocalyptic number.

It is an amenable number.

1123212212101 is a deficient number, since it is larger than the sum of its proper divisors (167654559995).

1123212212101 is a wasteful number, since it uses less digits than its factorization.

1123212212101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429228.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 1123212212101 its reverse (1012122123211), we get a palindrome (2135334335312).

The spelling of 1123212212101 in words is "one trillion, one hundred twenty-three billion, two hundred twelve million, two hundred twelve thousand, one hundred one".