10121201221011 has 4 divisors (see below), whose sum is σ = 13494934961352. Its totient is φ = 6747467480672.

The previous prime is 10121201221007. The next prime is 10121201221051. The reversal of 10121201221011 is 11012210212101.

It is a happy number.

10121201221011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 10121201221011 - 2² = 10121201221007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10121201221051) 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, 1686866870166 + ... + 1686866870171.

It is an arithmetic number, because the mean of its divisors is an integer number (3373733740338).

Almost surely, 2^{10121201221011} is an apocalyptic number.

10121201221011 is a deficient number, since it is larger than the sum of its proper divisors (3373733740341).

10121201221011 is an equidigital number, since it uses as much as digits as its factorization.

10121201221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3373733740340.

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

Adding to 10121201221011 its reverse (11012210212101), we get a palindrome (21133411433112).

The spelling of 10121201221011 in words is "ten trillion, one hundred twenty-one billion, two hundred one million, two hundred twenty-one thousand, eleven".