11231120450 has 24 divisors (see below), whose sum is σ = 22788965520. Its totient is φ = 4084043600.

The previous prime is 11231120437. The next prime is 11231120477. The reversal of 11231120450 is 5402113211.

It is a super-2 number, since 2×11231120450² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10209560 + ... + 10210659.

It is an arithmetic number, because the mean of its divisors is an integer number (949540230).

Almost surely, 2^11231120450 is an apocalyptic number.

11231120450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11231120450 is an abundant number, since it is smaller than the sum of its proper divisors (11557845070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11231120450 is a wasteful number, since it uses less digits than its factorization.

11231120450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20420242 (or 20420237 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 11231120450 its reverse (5402113211), we get a palindrome (16633233661).

The spelling of 11231120450 in words is "eleven billion, two hundred thirty-one million, one hundred twenty thousand, four hundred fifty".