121421301121 has 4 divisors (see below), whose sum is σ = 121515354544. Its totient is φ = 121327247700.

The previous prime is 121421301107. The next prime is 121421301139. The reversal of 121421301121 is 121103124121.

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 121421301121 - 2¹¹ = 121421299073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121421301101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47024775 + ... + 47027356.

It is an arithmetic number, because the mean of its divisors is an integer number (30378838636).

Almost surely, 2^121421301121 is an apocalyptic number.

It is an amenable number.

121421301121 is a deficient number, since it is larger than the sum of its proper divisors (94053423).

121421301121 is an equidigital number, since it uses as much as digits as its factorization.

121421301121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94053422.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 121421301121 its reverse (121103124121), we get a palindrome (242524425242).

The spelling of 121421301121 in words is "one hundred twenty-one billion, four hundred twenty-one million, three hundred one thousand, one hundred twenty-one".