101231011011205 has 32 divisors (see below), whose sum is σ = 127463305536000. Its totient is φ = 77033630564352.

The previous prime is 101231011011131. The next prime is 101231011011227. The reversal of 101231011011205 is 502110110132101.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 101231011011205 - 2⁷ = 101231011011077 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 42058917 + ... + 44400613.

It is an arithmetic number, because the mean of its divisors is an integer number (3983228298000).

Almost surely, 2^{101231011011205} is an apocalyptic number.

It is an amenable number.

101231011011205 is a deficient number, since it is larger than the sum of its proper divisors (26232294524795).

101231011011205 is a wasteful number, since it uses less digits than its factorization.

101231011011205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2343813.

The product of its (nonzero) digits is 60, while the sum is 19.

Adding to 101231011011205 its reverse (502110110132101), we get a palindrome (603341121143306).

The spelling of 101231011011205 in words is "one hundred one trillion, two hundred thirty-one billion, eleven million, eleven thousand, two hundred five".