11111233001 has 48 divisors (see below), whose sum is σ = 13281988608. Its totient is φ = 9191239200.

The previous prime is 11111232973. The next prime is 11111233039. The reversal of 11111233001 is 10033211111.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-11111233001 is a prime.

It is a super-2 number, since 2×11111233001² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11111232001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48948050 + ... + 48948276.

It is an arithmetic number, because the mean of its divisors is an integer number (276708096).

Almost surely, 2^11111233001 is an apocalyptic number.

11111233001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11111233001 is a deficient number, since it is larger than the sum of its proper divisors (2170755607).

11111233001 is a wasteful number, since it uses less digits than its factorization.

11111233001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450 (or 371 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 11111233001 its reverse (10033211111), we get a palindrome (21144444112).

The spelling of 11111233001 in words is "eleven billion, one hundred eleven million, two hundred thirty-three thousand, one".