11221010010121 has 4 divisors (see below), whose sum is σ = 11221016770432. Its totient is φ = 11221003249812.

The previous prime is 11221010010113. The next prime is 11221010010131. The reversal of 11221010010121 is 12101001012211.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11221010010121 - 2³ = 11221010010113 is a prime.

It is a super-2 number, since 2×11221010010121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221010010131) 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, 1011856 + ... + 4844158.

It is an arithmetic number, because the mean of its divisors is an integer number (2805254192608).

Almost surely, 2^{11221010010121} is an apocalyptic number.

It is an amenable number.

11221010010121 is a deficient number, since it is larger than the sum of its proper divisors (6760311).

11221010010121 is an equidigital number, since it uses as much as digits as its factorization.

11221010010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6760310.

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

Adding to 11221010010121 its reverse (12101001012211), we get a palindrome (23322011022332).

The spelling of 11221010010121 in words is "eleven trillion, two hundred twenty-one billion, ten million, ten thousand, one hundred twenty-one".