121012012351 has 2 divisors, whose sum is σ = 121012012352. Its totient is φ = 121012012350.

The previous prime is 121012012337. The next prime is 121012012367. The reversal of 121012012351 is 153210210121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121012012351 - 2⁹ = 121012011839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121012012391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60506006175 + 60506006176.

It is an arithmetic number, because the mean of its divisors is an integer number (60506006176).

Almost surely, 2^121012012351 is an apocalyptic number.

121012012351 is a deficient number, since it is larger than the sum of its proper divisors (1).

121012012351 is an equidigital number, since it uses as much as digits as its factorization.

121012012351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 121012012351 its reverse (153210210121), we get a palindrome (274222222472).

The spelling of 121012012351 in words is "one hundred twenty-one billion, twelve million, twelve thousand, three hundred fifty-one".