11223120203231 has 16 divisors (see below), whose sum is σ = 11791757878560. Its totient is φ = 10667161290240.

The previous prime is 11223120203213. The next prime is 11223120203233. The reversal of 11223120203231 is 13230202132211.

It is a cyclic number.

It is not a de Polignac number, because 11223120203231 - 2⁴² = 6825073692127 is a prime.

It is a super-2 number, since 2×11223120203231² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11223120203197 and 11223120203206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11223120203233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3984785 + ... + 6190698.

It is an arithmetic number, because the mean of its divisors is an integer number (736984867410).

Almost surely, 2^{11223120203231} is an apocalyptic number.

11223120203231 is a deficient number, since it is larger than the sum of its proper divisors (568637675329).

11223120203231 is a wasteful number, since it uses less digits than its factorization.

11223120203231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10176106.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 11223120203231 its reverse (13230202132211), we get a palindrome (24453322335442).

The spelling of 11223120203231 in words is "eleven trillion, two hundred twenty-three billion, one hundred twenty million, two hundred three thousand, two hundred thirty-one".