2142142131321 has 6 divisors (see below), whose sum is σ = 3094205300810. Its totient is φ = 1428094754208.

The previous prime is 2142142131313. The next prime is 2142142131341. The reversal of 2142142131321 is 1231312412412.

2142142131321 is a `hidden beast` number, since 2 + 1 + 421 + 4 + 213 + 1 + 3 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1077817712400 + 1064324418921 = 1038180^2 + 1031661^2 .

It is not a de Polignac number, because 2142142131321 - 2³ = 2142142131313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2142142131341) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 119007896176 + ... + 119007896193.

Almost surely, 2^{2142142131321} is an apocalyptic number.

It is an amenable number.

2142142131321 is a deficient number, since it is larger than the sum of its proper divisors (952063169489).

2142142131321 is a wasteful number, since it uses less digits than its factorization.

2142142131321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238015792375 (or 238015792372 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

Adding to 2142142131321 its reverse (1231312412412), we get a palindrome (3373454543733).

The spelling of 2142142131321 in words is "two trillion, one hundred forty-two billion, one hundred forty-two million, one hundred thirty-one thousand, three hundred twenty-one".