242122223131 has 4 divisors (see below), whose sum is σ = 242123697072. Its totient is φ = 242120749192.

The previous prime is 242122223111. The next prime is 242122223143. The reversal of 242122223131 is 131322221242.

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

It is a cyclic number.

It is not a de Polignac number, because 242122223131 - 2²⁵ = 242088668699 is a prime.

It is a super-2 number, since 2×242122223131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242122223096 and 242122223105.

It is not an unprimeable number, because it can be changed into a prime (242122223111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 454471 + ... + 831136.

It is an arithmetic number, because the mean of its divisors is an integer number (60530924268).

Almost surely, 2^242122223131 is an apocalyptic number.

242122223131 is a deficient number, since it is larger than the sum of its proper divisors (1473941).

242122223131 is a wasteful number, since it uses less digits than its factorization.

242122223131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473940.

The product of its digits is 2304, while the sum is 25.

Adding to 242122223131 its reverse (131322221242), we get a palindrome (373444444373).

The spelling of 242122223131 in words is "two hundred forty-two billion, one hundred twenty-two million, two hundred twenty-three thousand, one hundred thirty-one".