121421396011 has 2 divisors, whose sum is σ = 121421396012. Its totient is φ = 121421396010.

The previous prime is 121421396009. The next prime is 121421396051. The reversal of 121421396011 is 110693124121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121421396011 - 2¹ = 121421396009 is a prime.

Together with 121421396009, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (121421396051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60710698005 + 60710698006.

It is an arithmetic number, because the mean of its divisors is an integer number (60710698006).

Almost surely, 2^121421396011 is an apocalyptic number.

121421396011 is a deficient number, since it is larger than the sum of its proper divisors (1).

121421396011 is an equidigital number, since it uses as much as digits as its factorization.

121421396011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 31.

The spelling of 121421396011 in words is "one hundred twenty-one billion, four hundred twenty-one million, three hundred ninety-six thousand, eleven".