121001540545 has 8 divisors (see below), whose sum is σ = 148578636096. Its totient is φ = 94550040816.

The previous prime is 121001540507. The next prime is 121001540551. The reversal of 121001540545 is 545045100121.

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 121001540545 - 2²¹ = 120999443393 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281398717 + ... + 281399146.

It is an arithmetic number, because the mean of its divisors is an integer number (18572329512).

Almost surely, 2^121001540545 is an apocalyptic number.

It is an amenable number.

121001540545 is a deficient number, since it is larger than the sum of its proper divisors (27577095551).

121001540545 is an equidigital number, since it uses as much as digits as its factorization.

121001540545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562797911.

The product of its (nonzero) digits is 4000, while the sum is 28.

Adding to 121001540545 its reverse (545045100121), we get a palindrome (666046640666).

The spelling of 121001540545 in words is "one hundred twenty-one billion, one million, five hundred forty thousand, five hundred forty-five".