10121221201011 has 16 divisors (see below), whose sum is σ = 13625712930816. Its totient is φ = 6682418689536.

The previous prime is 10121221200989. The next prime is 10121221201043. The reversal of 10121221201011 is 11010212212101.

It is a happy number.

It is not a de Polignac number, because 10121221201011 - 2⁹ = 10121221200499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10121221201811) 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 15 ways as a sum of consecutive naturals, for example, 39064875 + ... + 39323108.

It is an arithmetic number, because the mean of its divisors is an integer number (851607058176).

Almost surely, 2^{10121221201011} is an apocalyptic number.

10121221201011 is a deficient number, since it is larger than the sum of its proper divisors (3504491729805).

10121221201011 is a wasteful number, since it uses less digits than its factorization.

10121221201011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78388402.

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

Adding to 10121221201011 its reverse (11010212212101), we get a palindrome (21131433413112).

The spelling of 10121221201011 in words is "ten trillion, one hundred twenty-one billion, two hundred twenty-one million, two hundred one thousand, eleven".