121504252351 has 2 divisors, whose sum is σ = 121504252352. Its totient is φ = 121504252350.

The previous prime is 121504252277. The next prime is 121504252379. The reversal of 121504252351 is 153252405121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121504252351 - 2²¹ = 121502155199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121504252951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60752126175 + 60752126176.

It is an arithmetic number, because the mean of its divisors is an integer number (60752126176).

Almost surely, 2^121504252351 is an apocalyptic number.

121504252351 is a deficient number, since it is larger than the sum of its proper divisors (1).

121504252351 is an equidigital number, since it uses as much as digits as its factorization.

121504252351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 121504252351 its reverse (153252405121), we get a palindrome (274756657472).

The spelling of 121504252351 in words is "one hundred twenty-one billion, five hundred four million, two hundred fifty-two thousand, three hundred fifty-one".