121144221211021 has 4 divisors (see below), whose sum is σ = 121147077956832. Its totient is φ = 121141364465212.

The previous prime is 121144221211001. The next prime is 121144221211061. The reversal of 121144221211021 is 120112122441121.

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 121144221211021 - 2⁴¹ = 118945197955469 is a prime.

It is a super-3 number, since 3×121144221211021³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121144221211001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1428309295 + ... + 1428394108.

It is an arithmetic number, because the mean of its divisors is an integer number (30286769489208).

Almost surely, 2^{121144221211021} is an apocalyptic number.

It is an amenable number.

121144221211021 is a deficient number, since it is larger than the sum of its proper divisors (2856745811).

121144221211021 is an equidigital number, since it uses as much as digits as its factorization.

121144221211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2856745810.

The product of its (nonzero) digits is 512, while the sum is 25.

Adding to 121144221211021 its reverse (120112122441121), we get a palindrome (241256343652142).

The spelling of 121144221211021 in words is "one hundred twenty-one trillion, one hundred forty-four billion, two hundred twenty-one million, two hundred eleven thousand, twenty-one".