10011202021121 has 6 divisors (see below), whose sum is σ = 11645683983810. Its totient is φ = 8581030303776.

The previous prime is 10011202021103. The next prime is 10011202021147. The reversal of 10011202021121 is 12112020211001.

It can be written as a sum of positive squares in only one way, i.e., 10008238416400 + 2963604721 = 3163580^2 + 54439^2 .

It is not a de Polignac number, because 10011202021121 - 2¹⁰ = 10011202020097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10011202021096 and 10011202021105.

It is not an unprimeable number, because it can be changed into a prime (10011202020121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 102155122616 + ... + 102155122713.

It is an arithmetic number, because the mean of its divisors is an integer number (1940947330635).

Almost surely, 2^{10011202021121} is an apocalyptic number.

It is an amenable number.

10011202021121 is a deficient number, since it is larger than the sum of its proper divisors (1634481962689).

10011202021121 is an equidigital number, since it uses as much as digits as its factorization.

10011202021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204310245343 (or 204310245336 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10011202021121 its reverse (12112020211001), we get a palindrome (22123222232122).

The spelling of 10011202021121 in words is "ten trillion, eleven billion, two hundred two million, twenty-one thousand, one hundred twenty-one".