11131222442 has 8 divisors (see below), whose sum is σ = 16803183396. Its totient is φ = 5530161312.

The previous prime is 11131222429. The next prime is 11131222489. The reversal of 11131222442 is 24422213111.

It can be written as a sum of positive squares in 2 ways, for example, as 10514246521 + 616975921 = 102539^2 + 24839^2 .

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

It is a super-2 number, since 2×11131222442² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17724563 + ... + 17725190.

Almost surely, 2^11131222442 is an apocalyptic number.

11131222442 is a deficient number, since it is larger than the sum of its proper divisors (5671960954).

11131222442 is a wasteful number, since it uses less digits than its factorization.

11131222442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35449912.

The product of its digits is 768, while the sum is 23.

Adding to 11131222442 its reverse (24422213111), we get a palindrome (35553435553).

The spelling of 11131222442 in words is "eleven billion, one hundred thirty-one million, two hundred twenty-two thousand, four hundred forty-two".