121210136743 has 2 divisors, whose sum is σ = 121210136744. Its totient is φ = 121210136742.

The previous prime is 121210136711. The next prime is 121210136771. The reversal of 121210136743 is 347631012121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121210136743 - 2⁵ = 121210136711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121210166743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60605068371 + 60605068372.

It is an arithmetic number, because the mean of its divisors is an integer number (60605068372).

Almost surely, 2^121210136743 is an apocalyptic number.

121210136743 is a deficient number, since it is larger than the sum of its proper divisors (1).

121210136743 is an equidigital number, since it uses as much as digits as its factorization.

121210136743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

Adding to 121210136743 its reverse (347631012121), we get a palindrome (468841148864).

The spelling of 121210136743 in words is "one hundred twenty-one billion, two hundred ten million, one hundred thirty-six thousand, seven hundred forty-three".