11221222002121 has 4 divisors (see below), whose sum is σ = 11221310016000. Its totient is φ = 11221133988244.

The previous prime is 11221222002119. The next prime is 11221222002127. The reversal of 11221222002121 is 12120022212211.

11221222002121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11221222002121 - 2¹ = 11221222002119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221222002127) 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, 43815421 + ... + 44070778.

It is an arithmetic number, because the mean of its divisors is an integer number (2805327504000).

Almost surely, 2^{11221222002121} is an apocalyptic number.

It is an amenable number.

11221222002121 is a deficient number, since it is larger than the sum of its proper divisors (88013879).

11221222002121 is an equidigital number, since it uses as much as digits as its factorization.

11221222002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88013878.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 11221222002121 its reverse (12120022212211), we get a palindrome (23341244214332).

The spelling of 11221222002121 in words is "eleven trillion, two hundred twenty-one billion, two hundred twenty-two million, two thousand, one hundred twenty-one".