2121423124442 has 32 divisors (see below), whose sum is σ = 3219935846400. Its totient is φ = 1048157454960.

The previous prime is 2121423124427. The next prime is 2121423124459. The reversal of 2121423124442 is 2444213241212.

It is a super-2 number, since 2×2121423124442² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2121423124399 and 2121423124408.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311833013 + ... + 311839815.

It is an arithmetic number, because the mean of its divisors is an integer number (100622995200).

Almost surely, 2^{2121423124442} is an apocalyptic number.

2121423124442 is a deficient number, since it is larger than the sum of its proper divisors (1098512721958).

2121423124442 is a wasteful number, since it uses less digits than its factorization.

2121423124442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9938.

The product of its digits is 24576, while the sum is 32.

Adding to 2121423124442 its reverse (2444213241212), we get a palindrome (4565636365654).

The spelling of 2121423124442 in words is "two trillion, one hundred twenty-one billion, four hundred twenty-three million, one hundred twenty-four thousand, four hundred forty-two".