121342522451 has 2 divisors, whose sum is σ = 121342522452. Its totient is φ = 121342522450.

The previous prime is 121342522409. The next prime is 121342522471. The reversal of 121342522451 is 154225243121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121342522451 - 2¹⁰ = 121342521427 is a prime.

It is not a weakly prime, because it can be changed into another prime (121342522471) 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 as a sum of consecutive naturals, namely, 60671261225 + 60671261226.

It is an arithmetic number, because the mean of its divisors is an integer number (60671261226).

Almost surely, 2^121342522451 is an apocalyptic number.

121342522451 is a deficient number, since it is larger than the sum of its proper divisors (1).

121342522451 is an equidigital number, since it uses as much as digits as its factorization.

121342522451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19200, while the sum is 32.

Adding to 121342522451 its reverse (154225243121), we get a palindrome (275567765572).

The spelling of 121342522451 in words is "one hundred twenty-one billion, three hundred forty-two million, five hundred twenty-two thousand, four hundred fifty-one".