4021331111242 has 4 divisors (see below), whose sum is σ = 6031996666866. Its totient is φ = 2010665555620.

The previous prime is 4021331111233. The next prime is 4021331111251. The reversal of 4021331111242 is 2421111331204.

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

It is an interprime number because it is at equal distance from previous prime (4021331111233) and next prime (4021331111251).

It can be written as a sum of positive squares in only one way, i.e., 3321145404801 + 700185706441 = 1822401^2 + 836771^2 .

It is a super-2 number, since 2×4021331111242² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005332777809 + ... + 1005332777812.

Almost surely, 2^{4021331111242} is an apocalyptic number.

4021331111242 is a deficient number, since it is larger than the sum of its proper divisors (2010665555624).

4021331111242 is a wasteful number, since it uses less digits than its factorization.

4021331111242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010665555623.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 4021331111242 its reverse (2421111331204), we get a palindrome (6442442442446).

The spelling of 4021331111242 in words is "four trillion, twenty-one billion, three hundred thirty-one million, one hundred eleven thousand, two hundred forty-two".