12142455424121 has 32 divisors (see below), whose sum is σ = 13844203589376. Its totient is φ = 10541893120000.

The previous prime is 12142455424109. The next prime is 12142455424123.

12142455424121 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12142455424121 - 2²² = 12142451229817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12142455424123) 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, 469878161 + ... + 469904001.

It is an arithmetic number, because the mean of its divisors is an integer number (432631362168).

Almost surely, 2^{12142455424121} is an apocalyptic number.

12142455424121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12142455424121 is a deficient number, since it is larger than the sum of its proper divisors (1701748165255).

12142455424121 is a wasteful number, since it uses less digits than its factorization.

12142455424121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28753.

The product of its digits is 102400, while the sum is 38.

It can be divided in two parts, 1214245 and 5424121, that added together give a palindrome (6638366).

The spelling of 12142455424121 in words is "twelve trillion, one hundred forty-two billion, four hundred fifty-five million, four hundred twenty-four thousand, one hundred twenty-one".