11220434431 has 8 divisors (see below), whose sum is σ = 11365482240. Its totient is φ = 11075621592.

The previous prime is 11220434359. The next prime is 11220434437. The reversal of 11220434431 is 13443402211.

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

It is not a de Polignac number, because 11220434431 - 2²¹ = 11218337279 is a prime.

It is a super-2 number, since 2×11220434431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11220434396 and 11220434405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220434437) 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, 38410 + ... + 154648.

It is an arithmetic number, because the mean of its divisors is an integer number (1420685280).

Almost surely, 2^11220434431 is an apocalyptic number.

11220434431 is a deficient number, since it is larger than the sum of its proper divisors (145047809).

11220434431 is a wasteful number, since it uses less digits than its factorization.

11220434431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117485.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 11220434431 its reverse (13443402211), we get a palindrome (24663836642).

The spelling of 11220434431 in words is "eleven billion, two hundred twenty million, four hundred thirty-four thousand, four hundred thirty-one".