121543054501 has 8 divisors (see below), whose sum is σ = 132599867904. Its totient is φ = 110487481920.

The previous prime is 121543054481. The next prime is 121543054579. The reversal of 121543054501 is 105450345121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121543054501 - 2²⁹ = 121006183589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121543054301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99141 + ... + 502906.

It is an arithmetic number, because the mean of its divisors is an integer number (16574983488).

Almost surely, 2^121543054501 is an apocalyptic number.

121543054501 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121543054501 is a deficient number, since it is larger than the sum of its proper divisors (11056813403).

121543054501 is a wasteful number, since it uses less digits than its factorization.

121543054501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620411.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 121543054501 its reverse (105450345121), we get a palindrome (226993399622).

The spelling of 121543054501 in words is "one hundred twenty-one billion, five hundred forty-three million, fifty-four thousand, five hundred one".