12120420342401 has 16 divisors (see below), whose sum is σ = 14226457522560. Its totient is φ = 10108027117440.

The previous prime is 12120420342383. The next prime is 12120420342419. The reversal of 12120420342401 is 10424302402121.

It is an interprime number because it is at equal distance from previous prime (12120420342383) and next prime (12120420342419).

It is a de Polignac number, because none of the positive numbers 2^k-12120420342401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12120420342101) 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, 25670981 + ... + 26138861.

It is an arithmetic number, because the mean of its divisors is an integer number (889153595160).

Almost surely, 2^{12120420342401} is an apocalyptic number.

It is an amenable number.

12120420342401 is a deficient number, since it is larger than the sum of its proper divisors (2106037180159).

12120420342401 is a wasteful number, since it uses less digits than its factorization.

12120420342401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567944.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 12120420342401 its reverse (10424302402121), we get a palindrome (22544722744522).

The spelling of 12120420342401 in words is "twelve trillion, one hundred twenty billion, four hundred twenty million, three hundred forty-two thousand, four hundred one".