11001121002121 has 4 divisors (see below), whose sum is σ = 11006169706000. Its totient is φ = 10996072298244.

The previous prime is 11001121002119. The next prime is 11001121002133. The reversal of 11001121002121 is 12120012110011.

It is a happy number.

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 11001121002121 - 2¹ = 11001121002119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11001121002721) 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, 2524348671 + ... + 2524353028.

It is an arithmetic number, because the mean of its divisors is an integer number (2751542426500).

Almost surely, 2^{11001121002121} is an apocalyptic number.

It is an amenable number.

11001121002121 is a deficient number, since it is larger than the sum of its proper divisors (5048703879).

11001121002121 is an equidigital number, since it uses as much as digits as its factorization.

11001121002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5048703878.

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

Adding to 11001121002121 its reverse (12120012110011), we get a palindrome (23121133112132).

The spelling of 11001121002121 in words is "eleven trillion, one billion, one hundred twenty-one million, two thousand, one hundred twenty-one".