121302132123 has 16 divisors (see below), whose sum is σ = 164402040096. Its totient is φ = 79535389440.

The previous prime is 121302132113. The next prime is 121302132167. The reversal of 121302132123 is 321231203121.

It is not a de Polignac number, because 121302132123 - 2⁶ = 121302132059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121302132123.

It is not an unprimeable number, because it can be changed into a prime (121302132113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2814565 + ... + 2857337.

It is an arithmetic number, because the mean of its divisors is an integer number (10275127506).

Almost surely, 2^121302132123 is an apocalyptic number.

121302132123 is a deficient number, since it is larger than the sum of its proper divisors (43099907973).

121302132123 is a wasteful number, since it uses less digits than its factorization.

121302132123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58334.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 121302132123 its reverse (321231203121), we get a palindrome (442533335244).

The spelling of 121302132123 in words is "one hundred twenty-one billion, three hundred two million, one hundred thirty-two thousand, one hundred twenty-three".