11201001121021 has 16 divisors (see below), whose sum is σ = 11298689003776. Its totient is φ = 11103642000000.

The previous prime is 11201001121001. The next prime is 11201001121031. The reversal of 11201001121021 is 12012110010211.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11201001121021 - 2⁹ = 11201001120509 is a prime.

It is a super-2 number, since 2×11201001121021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11201001120992 and 11201001121010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201001121001) 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, 179728456 + ... + 179790766.

It is an arithmetic number, because the mean of its divisors is an integer number (706168062736).

Almost surely, 2^{11201001121021} is an apocalyptic number.

It is an amenable number.

11201001121021 is a deficient number, since it is larger than the sum of its proper divisors (97687882755).

11201001121021 is a wasteful number, since it uses less digits than its factorization.

11201001121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64924.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11201001121021 its reverse (12012110010211), we get a palindrome (23213111131232).

The spelling of 11201001121021 in words is "eleven trillion, two hundred one billion, one million, one hundred twenty-one thousand, twenty-one".