121040101543 has 2 divisors, whose sum is σ = 121040101544. Its totient is φ = 121040101542.

The previous prime is 121040101529. The next prime is 121040101579. The reversal of 121040101543 is 345101040121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121040101543 - 2²¹ = 121038004391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121040108543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60520050771 + 60520050772.

It is an arithmetic number, because the mean of its divisors is an integer number (60520050772).

Almost surely, 2^121040101543 is an apocalyptic number.

121040101543 is a deficient number, since it is larger than the sum of its proper divisors (1).

121040101543 is an equidigital number, since it uses as much as digits as its factorization.

121040101543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 121040101543 its reverse (345101040121), we get a palindrome (466141141664).

The spelling of 121040101543 in words is "one hundred twenty-one billion, forty million, one hundred one thousand, five hundred forty-three".