121045435545 has 8 divisors (see below), whose sum is σ = 193672696896. Its totient is φ = 64557565616.

The previous prime is 121045435513. The next prime is 121045435549. The reversal of 121045435545 is 545534540121.

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 121045435545 - 2⁵ = 121045435513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121045435549) 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, 4034847837 + ... + 4034847866.

It is an arithmetic number, because the mean of its divisors is an integer number (24209087112).

Almost surely, 2^121045435545 is an apocalyptic number.

121045435545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121045435545 is a deficient number, since it is larger than the sum of its proper divisors (72627261351).

121045435545 is an equidigital number, since it uses as much as digits as its factorization.

121045435545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8069695711.

The product of its (nonzero) digits is 240000, while the sum is 39.

Adding to 121045435545 its reverse (545534540121), we get a palindrome (666579975666).

The spelling of 121045435545 in words is "one hundred twenty-one billion, forty-five million, four hundred thirty-five thousand, five hundred forty-five".