12405121302 has 16 divisors (see below), whose sum is σ = 28354563072. Its totient is φ = 3544320360.

The previous prime is 12405121301. The next prime is 12405121327. The reversal of 12405121302 is 20312150421.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12405121301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147679974 + ... + 147680057.

It is an arithmetic number, because the mean of its divisors is an integer number (1772160192).

Almost surely, 2^12405121302 is an apocalyptic number.

12405121302 is an abundant number, since it is smaller than the sum of its proper divisors (15949441770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12405121302 is a wasteful number, since it uses less digits than its factorization.

12405121302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295360043.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 12405121302 its reverse (20312150421), we get a palindrome (32717271723).

The spelling of 12405121302 in words is "twelve billion, four hundred five million, one hundred twenty-one thousand, three hundred two".