11021004431 has 4 divisors (see below), whose sum is σ = 11021232264. Its totient is φ = 11020776600.

The previous prime is 11021004419. The next prime is 11021004457. The reversal of 11021004431 is 13440012011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13440012011 = 41 ⋅327805171.

It is a cyclic number.

It is not a de Polignac number, because 11021004431 - 2³⁰ = 9947262607 is a prime.

It is a super-2 number, since 2×11021004431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021004481) 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, 9380 + ... + 148761.

It is an arithmetic number, because the mean of its divisors is an integer number (2755308066).

Almost surely, 2^11021004431 is an apocalyptic number.

11021004431 is a deficient number, since it is larger than the sum of its proper divisors (227833).

11021004431 is an equidigital number, since it uses as much as digits as its factorization.

11021004431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227832.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 11021004431 its reverse (13440012011), we get a palindrome (24461016442).

The spelling of 11021004431 in words is "eleven billion, twenty-one million, four thousand, four hundred thirty-one".