11143340213421 has 16 divisors (see below), whose sum is σ = 16117487031744. Its totient is φ = 6807385820544.

The previous prime is 11143340213417. The next prime is 11143340213459. The reversal of 11143340213421 is 12431204334111.

It is not a de Polignac number, because 11143340213421 - 2² = 11143340213417 is a prime.

It is a super-2 number, since 2×11143340213421² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11143340213491) 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 15 ways as a sum of consecutive naturals, for example, 1042792731 + ... + 1042803416.

It is an arithmetic number, because the mean of its divisors is an integer number (1007342939484).

Almost surely, 2^{11143340213421} is an apocalyptic number.

It is an amenable number.

11143340213421 is a deficient number, since it is larger than the sum of its proper divisors (4974146818323).

11143340213421 is a wasteful number, since it uses less digits than its factorization.

11143340213421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2085596300.

The product of its (nonzero) digits is 6912, while the sum is 30.

Adding to 11143340213421 its reverse (12431204334111), we get a palindrome (23574544547532).

The spelling of 11143340213421 in words is "eleven trillion, one hundred forty-three billion, three hundred forty million, two hundred thirteen thousand, four hundred twenty-one".