121293509831951 has 2 divisors, whose sum is σ = 121293509831952. Its totient is φ = 121293509831950.

The previous prime is 121293509831941. The next prime is 121293509832091. The reversal of 121293509831951 is 159138905392121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121293509831951 - 2⁶ = 121293509831887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121293509831941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60646754915975 + 60646754915976.

It is an arithmetic number, because the mean of its divisors is an integer number (60646754915976).

Almost surely, 2^{121293509831951} is an apocalyptic number.

121293509831951 is a deficient number, since it is larger than the sum of its proper divisors (1).

121293509831951 is an equidigital number, since it uses as much as digits as its factorization.

121293509831951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5248800, while the sum is 59.

The spelling of 121293509831951 in words is "one hundred twenty-one trillion, two hundred ninety-three billion, five hundred nine million, eight hundred thirty-one thousand, nine hundred fifty-one".