11001022002121 has 4 divisors (see below), whose sum is σ = 11004832542592. Its totient is φ = 10997211461652.

The previous prime is 11001022002079. The next prime is 11001022002161. The reversal of 11001022002121 is 12120022010011.

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 a de Polignac number, because none of the positive numbers 2^k-11001022002121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11001022002161) 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, 1905265905 + ... + 1905271678.

It is an arithmetic number, because the mean of its divisors is an integer number (2751208135648).

Almost surely, 2^{11001022002121} is an apocalyptic number.

It is an amenable number.

11001022002121 is a deficient number, since it is larger than the sum of its proper divisors (3810540471).

11001022002121 is an equidigital number, since it uses as much as digits as its factorization.

11001022002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3810540470.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11001022002121 its reverse (12120022010011), we get a palindrome (23121044012132).

The spelling of 11001022002121 in words is "eleven trillion, one billion, twenty-two million, two thousand, one hundred twenty-one".