1011212212101 has 64 divisors (see below), whose sum is σ = 1663872000000. Its totient is φ = 531959291136.

The previous prime is 1011212212091. The next prime is 1011212212123. The reversal of 1011212212101 is 1012122121101.

It is a happy number.

It is not a de Polignac number, because 1011212212101 - 2⁶ = 1011212212037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011212212601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 202280400 + ... + 202285398.

It is an arithmetic number, because the mean of its divisors is an integer number (25998000000).

Almost surely, 2^{1011212212101} is an apocalyptic number.

It is an amenable number.

1011212212101 is a deficient number, since it is larger than the sum of its proper divisors (652659787899).

1011212212101 is a wasteful number, since it uses less digits than its factorization.

1011212212101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6858.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1011212212101 its reverse (1012122121101), we get a palindrome (2023334333202).

The spelling of 1011212212101 in words is "one trillion, eleven billion, two hundred twelve million, two hundred twelve thousand, one hundred one".