11202120220121 has 4 divisors (see below), whose sum is σ = 11202155350272. Its totient is φ = 11202085089972.

The previous prime is 11202120220091. The next prime is 11202120220133. The reversal of 11202120220121 is 12102202120211.

11202120220121 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11202120220121 - 2²² = 11202116025817 is a prime.

It is a super-2 number, since 2×11202120220121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11202120220121.

It is not an unprimeable number, because it can be changed into a prime (11202120220021) 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, 17082341 + ... + 17725986.

It is an arithmetic number, because the mean of its divisors is an integer number (2800538837568).

Almost surely, 2^{11202120220121} is an apocalyptic number.

It is an amenable number.

11202120220121 is a deficient number, since it is larger than the sum of its proper divisors (35130151).

11202120220121 is an equidigital number, since it uses as much as digits as its factorization.

11202120220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35130150.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 11202120220121 its reverse (12102202120211), we get a palindrome (23304322340332).

The spelling of 11202120220121 in words is "eleven trillion, two hundred two billion, one hundred twenty million, two hundred twenty thousand, one hundred twenty-one".