121302342530 has 64 divisors (see below), whose sum is σ = 230792018688. Its totient is φ = 45844081920.

The previous prime is 121302342529. The next prime is 121302342533. The reversal of 121302342530 is 35243203121.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121302342530.

It is not an unprimeable number, because it can be changed into a prime (121302342533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2730395 + ... + 2774465.

It is an arithmetic number, because the mean of its divisors is an integer number (3606125292).

Almost surely, 2^121302342530 is an apocalyptic number.

121302342530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121302342530 is a deficient number, since it is larger than the sum of its proper divisors (109489676158).

121302342530 is a wasteful number, since it uses less digits than its factorization.

121302342530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44331.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 121302342530 its reverse (35243203121), we get a palindrome (156545545651).

The spelling of 121302342530 in words is "one hundred twenty-one billion, three hundred two million, three hundred forty-two thousand, five hundred thirty".