121201020421343 has 2 divisors, whose sum is σ = 121201020421344. Its totient is φ = 121201020421342.

The previous prime is 121201020421337. The next prime is 121201020421499. The reversal of 121201020421343 is 343124020102121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121201020421343 - 2³² = 121196725454047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121201020421543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60600510210671 + 60600510210672.

It is an arithmetic number, because the mean of its divisors is an integer number (60600510210672).

Almost surely, 2^{121201020421343} is an apocalyptic number.

121201020421343 is a deficient number, since it is larger than the sum of its proper divisors (1).

121201020421343 is an equidigital number, since it uses as much as digits as its factorization.

121201020421343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 121201020421343 its reverse (343124020102121), we get a palindrome (464325040523464).

The spelling of 121201020421343 in words is "one hundred twenty-one trillion, two hundred one billion, twenty million, four hundred twenty-one thousand, three hundred forty-three".