121214543 has 2 divisors, whose sum is σ = 121214544. Its totient is φ = 121214542.

The previous prime is 121214507. The next prime is 121214563. The reversal of 121214543 is 345412121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121214543 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121214563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60607271 + 60607272.

It is an arithmetic number, because the mean of its divisors is an integer number (60607272).

Almost surely, 2^121214543 is an apocalyptic number.

121214543 is a deficient number, since it is larger than the sum of its proper divisors (1).

121214543 is an equidigital number, since it uses as much as digits as its factorization.

121214543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 960, while the sum is 23.

The square root of 121214543 is about 11009.7476356182. The cubic root of 121214543 is about 494.9008991148.

Adding to 121214543 its reverse (345412121), we get a palindrome (466626664).

The spelling of 121214543 in words is "one hundred twenty-one million, two hundred fourteen thousand, five hundred forty-three".