11421142434251 has 8 divisors (see below), whose sum is σ = 12522038304000. Its totient is φ = 10330681596840.

The previous prime is 11421142434227. The next prime is 11421142434253. The reversal of 11421142434251 is 15243424112411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-11421142434251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11421142434253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2608755791 + ... + 2608760168.

It is an arithmetic number, because the mean of its divisors is an integer number (1565254788000).

Almost surely, 2^{11421142434251} is an apocalyptic number.

11421142434251 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11421142434251 is a deficient number, since it is larger than the sum of its proper divisors (1100895869749).

11421142434251 is a wasteful number, since it uses less digits than its factorization.

11421142434251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5217516169.

The product of its digits is 30720, while the sum is 35.

Adding to 11421142434251 its reverse (15243424112411), we get a palindrome (26664566546662).

The spelling of 11421142434251 in words is "eleven trillion, four hundred twenty-one billion, one hundred forty-two million, four hundred thirty-four thousand, two hundred fifty-one".