1123213021101 has 24 divisors (see below), whose sum is σ = 1699166929824. Its totient is φ = 741394717200.

The previous prime is 1123213021039. The next prime is 1123213021109. The reversal of 1123213021101 is 1011203123211.

It is not a de Polignac number, because 1123213021101 - 2⁷ = 1123213020973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123213021109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22858011 + ... + 22907096.

It is an arithmetic number, because the mean of its divisors is an integer number (70798622076).

Almost surely, 2^{1123213021101} is an apocalyptic number.

It is an amenable number.

1123213021101 is a deficient number, since it is larger than the sum of its proper divisors (575953908723).

1123213021101 is an equidigital number, since it uses as much as digits as its factorization.

1123213021101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45765223 (or 45765211 counting only the distinct ones).

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

Adding to 1123213021101 its reverse (1011203123211), we get a palindrome (2134416144312).

The spelling of 1123213021101 in words is "one trillion, one hundred twenty-three billion, two hundred thirteen million, twenty-one thousand, one hundred one".