11121233212156 has 6 divisors (see below), whose sum is σ = 19462158121280. Its totient is φ = 5560616606076.

The previous prime is 11121233212091. The next prime is 11121233212157. The reversal of 11121233212156 is 65121233212111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121233212157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1390154151516 + ... + 1390154151523.

Almost surely, 2^{11121233212156} is an apocalyptic number.

It is an amenable number.

11121233212156 is a deficient number, since it is larger than the sum of its proper divisors (8340924909124).

11121233212156 is a wasteful number, since it uses less digits than its factorization.

11121233212156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2780308303043 (or 2780308303041 counting only the distinct ones).

The product of its digits is 4320, while the sum is 31.

Adding to 11121233212156 its reverse (65121233212111), we get a palindrome (76242466424267).

The spelling of 11121233212156 in words is "eleven trillion, one hundred twenty-one billion, two hundred thirty-three million, two hundred twelve thousand, one hundred fifty-six".