1123100020221 has 8 divisors (see below), whose sum is σ = 1504563693024. Its totient is φ = 745184847120.

The previous prime is 1123100020151. The next prime is 1123100020243. The reversal of 1123100020221 is 1220200013211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1123100020221 - 2⁷ = 1123100020093 is a prime.

It is a super-2 number, since 2×1123100020221² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1123100020221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123100027221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 887124186 + ... + 887125451.

It is an arithmetic number, because the mean of its divisors is an integer number (188070461628).

Almost surely, 2^{1123100020221} is an apocalyptic number.

It is an amenable number.

1123100020221 is a deficient number, since it is larger than the sum of its proper divisors (381463672803).

1123100020221 is a wasteful number, since it uses less digits than its factorization.

1123100020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1774249851.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1123100020221 its reverse (1220200013211), we get a palindrome (2343300033432).

The spelling of 1123100020221 in words is "one trillion, one hundred twenty-three billion, one hundred million, twenty thousand, two hundred twenty-one".