101212201221011 has 4 divisors (see below), whose sum is σ = 101326307423952. Its totient is φ = 101098095018072.

The previous prime is 101212201221007. The next prime is 101212201221077. The reversal of 101212201221011 is 110122102212101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101212201221011 - 2² = 101212201221007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101212201221091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57053100140 + ... + 57053101913.

It is an arithmetic number, because the mean of its divisors is an integer number (25331576855988).

Almost surely, 2^{101212201221011} is an apocalyptic number.

101212201221011 is a deficient number, since it is larger than the sum of its proper divisors (114106202941).

101212201221011 is an equidigital number, since it uses as much as digits as its factorization.

101212201221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114106202940.

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

Adding to 101212201221011 its reverse (110122102212101), we get a palindrome (211334303433112).

The spelling of 101212201221011 in words is "one hundred one trillion, two hundred twelve billion, two hundred one million, two hundred twenty-one thousand, eleven".