10121221211011 has 4 divisors (see below), whose sum is σ = 10121792113800. Its totient is φ = 10120650308224.

The previous prime is 10121221210993. The next prime is 10121221211027. The reversal of 10121221211011 is 11011212212101.

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 10121221211011 - 2¹¹ = 10121221208963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10121221211051) 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, 285424801 + ... + 285460258.

It is an arithmetic number, because the mean of its divisors is an integer number (2530448028450).

Almost surely, 2^{10121221211011} is an apocalyptic number.

10121221211011 is a deficient number, since it is larger than the sum of its proper divisors (570902789).

10121221211011 is an equidigital number, since it uses as much as digits as its factorization.

10121221211011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570902788.

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

Adding to 10121221211011 its reverse (11011212212101), we get a palindrome (21132433423112).

The spelling of 10121221211011 in words is "ten trillion, one hundred twenty-one billion, two hundred twenty-one million, two hundred eleven thousand, eleven".