121407242071 has 4 divisors (see below), whose sum is σ = 122085495000. Its totient is φ = 120728989144.

The previous prime is 121407242029. The next prime is 121407242083. The reversal of 121407242071 is 170242704121.

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 121407242071 - 2¹¹ = 121407240023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121407242771) 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, 339126196 + ... + 339126553.

It is an arithmetic number, because the mean of its divisors is an integer number (30521373750).

Almost surely, 2^121407242071 is an apocalyptic number.

121407242071 is a deficient number, since it is larger than the sum of its proper divisors (678252929).

121407242071 is an equidigital number, since it uses as much as digits as its factorization.

121407242071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678252928.

The product of its (nonzero) digits is 6272, while the sum is 31.

Adding to 121407242071 its reverse (170242704121), we get a palindrome (291649946192).

The spelling of 121407242071 in words is "one hundred twenty-one billion, four hundred seven million, two hundred forty-two thousand, seventy-one".