121530664045 has 48 divisors (see below), whose sum is σ = 174384524160. Its totient is φ = 79642392192.

The previous prime is 121530664039. The next prime is 121530664051. The reversal of 121530664045 is 540466035121.

It is an interprime number because it is at equal distance from previous prime (121530664039) and next prime (121530664051).

It is a de Polignac number, because none of the positive numbers 2^k-121530664045 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121530663995 and 121530664013.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29233107 + ... + 29237263.

It is an arithmetic number, because the mean of its divisors is an integer number (3633010920).

Almost surely, 2^121530664045 is an apocalyptic number.

It is an amenable number.

121530664045 is a deficient number, since it is larger than the sum of its proper divisors (52853860115).

121530664045 is a wasteful number, since it uses less digits than its factorization.

121530664045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5794 (or 5771 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 121530664045 its reverse (540466035121), we get a palindrome (661996699166).

The spelling of 121530664045 in words is "one hundred twenty-one billion, five hundred thirty million, six hundred sixty-four thousand, forty-five".