1123230021111 has 64 divisors (see below), whose sum is σ = 1939739788800. Its totient is φ = 634823308800.

The previous prime is 1123230021103. The next prime is 1123230021163. The reversal of 1123230021111 is 1111200323211.

1123230021111 is a `hidden beast` number, since 1 + 1 + 232 + 300 + 21 + 111 = 666.

It is not a de Polignac number, because 1123230021111 - 2³ = 1123230021103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123230021191) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 470145 + ... + 1570826.

It is an arithmetic number, because the mean of its divisors is an integer number (30308434200).

Almost surely, 2^{1123230021111} is an apocalyptic number.

1123230021111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1123230021111 is a deficient number, since it is larger than the sum of its proper divisors (816509767689).

1123230021111 is a wasteful number, since it uses less digits than its factorization.

1123230021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041117 (or 2041111 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1123230021111 its reverse (1111200323211), we get a palindrome (2234430344322).

The spelling of 1123230021111 in words is "one trillion, one hundred twenty-three billion, two hundred thirty million, twenty-one thousand, one hundred eleven".