2112131040242 has 4 divisors (see below), whose sum is σ = 3168196560366. Its totient is φ = 1056065520120.

The previous prime is 2112131040209. The next prime is 2112131040247. The reversal of 2112131040242 is 2420401312112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2093169474841 + 18961565401 = 1446779^2 + 137701^2 .

It is a super-2 number, since 2×2112131040242² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2112131040247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528032760059 + ... + 528032760062.

Almost surely, 2^{2112131040242} is an apocalyptic number.

2112131040242 is a deficient number, since it is larger than the sum of its proper divisors (1056065520124).

2112131040242 is a wasteful number, since it uses less digits than its factorization.

2112131040242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056065520123.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 2112131040242 its reverse (2420401312112), we get a palindrome (4532532352354).

The spelling of 2112131040242 in words is "two trillion, one hundred twelve billion, one hundred thirty-one million, forty thousand, two hundred forty-two".