11201121122021 has 2 divisors, whose sum is σ = 11201121122022. Its totient is φ = 11201121122020.

The previous prime is 11201121121963. The next prime is 11201121122069. The reversal of 11201121122021 is 12022112110211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11103723450625 + 97397671396 = 3332225^2 + 312086^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11201121122021 is a prime.

It is a super-2 number, since 2×11201121122021² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11201121122621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5600560561010 + 5600560561011.

It is an arithmetic number, because the mean of its divisors is an integer number (5600560561011).

Almost surely, 2^{11201121122021} is an apocalyptic number.

It is an amenable number.

11201121122021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11201121122021 is an equidigital number, since it uses as much as digits as its factorization.

11201121122021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11201121122021 its reverse (12022112110211), we get a palindrome (23223233232232).

The spelling of 11201121122021 in words is "eleven trillion, two hundred one billion, one hundred twenty-one million, one hundred twenty-two thousand, twenty-one".