121420141211 has 4 divisors (see below), whose sum is σ = 122306419752. Its totient is φ = 120533862672.

The previous prime is 121420141187. The next prime is 121420141237. The reversal of 121420141211 is 112141024121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121420141211 - 2³⁴ = 104240272027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121420141111) 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, 443139065 + ... + 443139338.

It is an arithmetic number, because the mean of its divisors is an integer number (30576604938).

Almost surely, 2^121420141211 is an apocalyptic number.

121420141211 is a deficient number, since it is larger than the sum of its proper divisors (886278541).

121420141211 is an equidigital number, since it uses as much as digits as its factorization.

121420141211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886278540.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 121420141211 its reverse (112141024121), we get a palindrome (233561165332).

The spelling of 121420141211 in words is "one hundred twenty-one billion, four hundred twenty million, one hundred forty-one thousand, two hundred eleven".