11201120210121 has 64 divisors (see below), whose sum is σ = 16420463493120. Its totient is φ = 6769475032320.

The previous prime is 11201120210101. The next prime is 11201120210177. The reversal of 11201120210121 is 12101202110211.

It is a happy number.

It is not a de Polignac number, because 11201120210121 - 2⁵ = 11201120210089 is a prime.

It is a super-2 number, since 2×11201120210121² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11201120210121.

It is not an unprimeable number, because it can be changed into a prime (11201120210101) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 61921435 + ... + 62102063.

It is an arithmetic number, because the mean of its divisors is an integer number (256569742080).

Almost surely, 2^{11201120210121} is an apocalyptic number.

It is an amenable number.

11201120210121 is a deficient number, since it is larger than the sum of its proper divisors (5219343282999).

11201120210121 is a wasteful number, since it uses less digits than its factorization.

11201120210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181286.

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

Adding to 11201120210121 its reverse (12101202110211), we get a palindrome (23302322320332).

The spelling of 11201120210121 in words is "eleven trillion, two hundred one billion, one hundred twenty million, two hundred ten thousand, one hundred twenty-one".