10111202120121 has 16 divisors (see below), whose sum is σ = 13515356320128. Its totient is φ = 6723933955200.

The previous prime is 10111202120119. The next prime is 10111202120143. The reversal of 10111202120121 is 12102120211101.

It is a happy number.

It is not a de Polignac number, because 10111202120121 - 2¹ = 10111202120119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10111202120121.

It is not an unprimeable number, because it can be changed into a prime (10111202120191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3201916 + ... + 5520386.

It is an arithmetic number, because the mean of its divisors is an integer number (844709770008).

Almost surely, 2^{10111202120121} is an apocalyptic number.

It is an amenable number.

10111202120121 is a deficient number, since it is larger than the sum of its proper divisors (3404154200007).

10111202120121 is a wasteful number, since it uses less digits than its factorization.

10111202120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2322112.

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

Adding to 10111202120121 its reverse (12102120211101), we get a palindrome (22213322331222).

The spelling of 10111202120121 in words is "ten trillion, one hundred eleven billion, two hundred two million, one hundred twenty thousand, one hundred twenty-one".