121051544005 has 32 divisors (see below), whose sum is σ = 175125749760. Its totient is φ = 78469404480.

The previous prime is 121051543999. The next prime is 121051544059. The reversal of 121051544005 is 500445150121.

It is not a de Polignac number, because 121051544005 - 2¹⁵ = 121051511237 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115660 + ... + 505450.

It is an arithmetic number, because the mean of its divisors is an integer number (5472679680).

Almost surely, 2^121051544005 is an apocalyptic number.

It is an amenable number.

121051544005 is a deficient number, since it is larger than the sum of its proper divisors (54074205755).

121051544005 is a wasteful number, since it uses less digits than its factorization.

121051544005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390289.

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

Adding to 121051544005 its reverse (500445150121), we get a palindrome (621496694126).

The spelling of 121051544005 in words is "one hundred twenty-one billion, fifty-one million, five hundred forty-four thousand, five".