1100331123213 has 64 divisors (see below), whose sum is σ = 1798883665920. Its totient is φ = 583972147200.

The previous prime is 1100331123181. The next prime is 1100331123251. The reversal of 1100331123213 is 3123211330011.

It is a happy number.

It is not a de Polignac number, because 1100331123213 - 2⁵ = 1100331123181 is a prime.

It is a super-2 number, since 2×1100331123213² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1100331123213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100331113213) 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, 8305573 + ... + 8437013.

It is an arithmetic number, because the mean of its divisors is an integer number (28107557280).

Almost surely, 2^{1100331123213} is an apocalyptic number.

It is an amenable number.

1100331123213 is a deficient number, since it is larger than the sum of its proper divisors (698552542707).

1100331123213 is a wasteful number, since it uses less digits than its factorization.

1100331123213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131778.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1100331123213 its reverse (3123211330011), we get a palindrome (4223542453224).

The spelling of 1100331123213 in words is "one trillion, one hundred billion, three hundred thirty-one million, one hundred twenty-three thousand, two hundred thirteen".