121101120211021 has 4 divisors (see below), whose sum is σ = 121101787620000. Its totient is φ = 121100452802044.

The previous prime is 121101120211009. The next prime is 121101120211037. The reversal of 121101120211021 is 120112021101121.

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 121101120211021 - 2⁷ = 121101120210893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121101120210986 and 121101120211004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121101120241021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333432241 + ... + 333795238.

It is an arithmetic number, because the mean of its divisors is an integer number (30275446905000).

Almost surely, 2^{121101120211021} is an apocalyptic number.

It is an amenable number.

121101120211021 is a deficient number, since it is larger than the sum of its proper divisors (667408979).

121101120211021 is an equidigital number, since it uses as much as digits as its factorization.

121101120211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667408978.

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

Adding to 121101120211021 its reverse (120112021101121), we get a palindrome (241213141312142).

The spelling of 121101120211021 in words is "one hundred twenty-one trillion, one hundred one billion, one hundred twenty million, two hundred eleven thousand, twenty-one".