11223212131 has 8 divisors (see below), whose sum is σ = 11693528064. Its totient is φ = 10759663560.

The previous prime is 11223212129. The next prime is 11223212153. The reversal of 11223212131 is 13121232211.

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

It is a cyclic number.

It is not a de Polignac number, because 11223212131 - 2¹ = 11223212129 is a prime.

It is a super-2 number, since 2×11223212131² (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 = 11223212099 and 11223212108.

It is not an unprimeable number, because it can be changed into a prime (11223212171) 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, 1688455 + ... + 1695088.

It is an arithmetic number, because the mean of its divisors is an integer number (1461691008).

Almost surely, 2^11223212131 is an apocalyptic number.

11223212131 is a deficient number, since it is larger than the sum of its proper divisors (470315933).

11223212131 is a wasteful number, since it uses less digits than its factorization.

11223212131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3383681.

The product of its digits is 144, while the sum is 19.

Adding to 11223212131 its reverse (13121232211), we get a palindrome (24344444342).

The spelling of 11223212131 in words is "eleven billion, two hundred twenty-three million, two hundred twelve thousand, one hundred thirty-one".