121305146516 has 6 divisors (see below), whose sum is σ = 212284006410. Its totient is φ = 60652573256.

The previous prime is 121305146503. The next prime is 121305146531. The reversal of 121305146516 is 615641503121.

It can be written as a sum of positive squares in only one way, i.e., 113706537616 + 7598608900 = 337204^2 + 87170^2 .

It is a super-3 number, since 3×121305146516³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15163143311 + ... + 15163143318.

It is an arithmetic number, because the mean of its divisors is an integer number (35380667735).

Almost surely, 2^121305146516 is an apocalyptic number.

It is an amenable number.

121305146516 is a deficient number, since it is larger than the sum of its proper divisors (90978859894).

121305146516 is a wasteful number, since it uses less digits than its factorization.

121305146516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30326286633 (or 30326286631 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 35.

Adding to 121305146516 its reverse (615641503121), we get a palindrome (736946649637).

The spelling of 121305146516 in words is "one hundred twenty-one billion, three hundred five million, one hundred forty-six thousand, five hundred sixteen".