11115401421 has 8 divisors (see below), whose sum is σ = 14828210080. Its totient is φ = 7406430192.

The previous prime is 11115401389. The next prime is 11115401443. The reversal of 11115401421 is 12410451111.

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

It is not a de Polignac number, because 11115401421 - 2⁵ = 11115401389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11115401491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 952591 + ... + 964188.

It is an arithmetic number, because the mean of its divisors is an integer number (1853526260).

Almost surely, 2^11115401421 is an apocalyptic number.

It is an amenable number.

11115401421 is a deficient number, since it is larger than the sum of its proper divisors (3712808659).

11115401421 is a wasteful number, since it uses less digits than its factorization.

11115401421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1918715.

The product of its (nonzero) digits is 160, while the sum is 21.

Adding to 11115401421 its reverse (12410451111), we get a palindrome (23525852532).

The spelling of 11115401421 in words is "eleven billion, one hundred fifteen million, four hundred one thousand, four hundred twenty-one".