11001222010121 has 4 divisors (see below), whose sum is σ = 12572825154432. Its totient is φ = 9429618865812.

The previous prime is 11001222010081. The next prime is 11001222010151. The reversal of 11001222010121 is 12101022210011.

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 11001222010121 - 2⁴² = 6603175499017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11001222010096 and 11001222010105.

It is not an unprimeable number, because it can be changed into a prime (11001222010151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 785801572145 + ... + 785801572158.

It is an arithmetic number, because the mean of its divisors is an integer number (3143206288608).

Almost surely, 2^{11001222010121} is an apocalyptic number.

It is an amenable number.

11001222010121 is a deficient number, since it is larger than the sum of its proper divisors (1571603144311).

11001222010121 is an equidigital number, since it uses as much as digits as its factorization.

11001222010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571603144310.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11001222010121 its reverse (12101022210011), we get a palindrome (23102244220132).

The spelling of 11001222010121 in words is "eleven trillion, one billion, two hundred twenty-two million, ten thousand, one hundred twenty-one".