11000144421 has 24 divisors (see below), whose sum is σ = 18338770944. Its totient is φ = 6223557600.

The previous prime is 11000144413. The next prime is 11000144429. The reversal of 11000144421 is 12444100011.

11000144421 is a `hidden beast` number, since 1 + 100 + 0 + 144 + 421 = 666.

It is an interprime number because it is at equal distance from previous prime (11000144413) and next prime (11000144429).

It is not a de Polignac number, because 11000144421 - 2³ = 11000144413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11000144394 and 11000144403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11000144429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 858021 + ... + 870746.

It is an arithmetic number, because the mean of its divisors is an integer number (764115456).

Almost surely, 2^11000144421 is an apocalyptic number.

It is an amenable number.

11000144421 is a deficient number, since it is larger than the sum of its proper divisors (7338626523).

11000144421 is a wasteful number, since it uses less digits than its factorization.

11000144421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728881 (or 1728878 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 11000144421 its reverse (12444100011), we get a palindrome (23444244432).

The spelling of 11000144421 in words is "eleven billion, one hundred forty-four thousand, four hundred twenty-one".