11400030021 has 4 divisors (see below), whose sum is σ = 15200040032. Its totient is φ = 7600020012.

The previous prime is 11400029987. The next prime is 11400030023. The reversal of 11400030021 is 12003000411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12003000411 = 3 ⋅4001000137.

It is not a de Polignac number, because 11400030021 - 2¹⁴ = 11400013637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11400029979 and 11400030006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11400030023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1900005001 + ... + 1900005006.

It is an arithmetic number, because the mean of its divisors is an integer number (3800010008).

Almost surely, 2^11400030021 is an apocalyptic number.

It is an amenable number.

11400030021 is a deficient number, since it is larger than the sum of its proper divisors (3800010011).

11400030021 is an equidigital number, since it uses as much as digits as its factorization.

11400030021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3800010010.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 11400030021 its reverse (12003000411), we get a palindrome (23403030432).

The spelling of 11400030021 in words is "eleven billion, four hundred million, thirty thousand, twenty-one".