101212120111011 has 128 divisors (see below), whose sum is σ = 172186641285120. Its totient is φ = 51456899870208.

The previous prime is 101212120110947. The next prime is 101212120111021. The reversal of 101212120111011 is 110111021212101.

It is not a de Polignac number, because 101212120111011 - 2⁶ = 101212120110947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101212120111021) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 475418356 + ... + 475631198.

It is an arithmetic number, because the mean of its divisors is an integer number (1345208135040).

Almost surely, 2^{101212120111011} is an apocalyptic number.

101212120111011 is a deficient number, since it is larger than the sum of its proper divisors (70974521174109).

101212120111011 is a wasteful number, since it uses less digits than its factorization.

101212120111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213345.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 101212120111011 its reverse (110111021212101), we get a palindrome (211323141323112).

The spelling of 101212120111011 in words is "one hundred one trillion, two hundred twelve billion, one hundred twenty million, one hundred eleven thousand, eleven".