1123101211 has 16 divisors (see below), whose sum is σ = 1152597600. Its totient is φ = 1094123520.

The previous prime is 1123101197. The next prime is 1123101223. The reversal of 1123101211 is 1121013211.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1123101211 - 2¹³ = 1123093019 is a prime.

It is a super-2 number, since 2×1123101211² = 2522712660299333042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1123101191 and 1123101200.

It is not an unprimeable number, because it can be changed into a prime (1123101281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2501115 + ... + 2501563.

It is an arithmetic number, because the mean of its divisors is an integer number (72037350).

Almost surely, 2^1123101211 is an apocalyptic number.

1123101211 is a deficient number, since it is larger than the sum of its proper divisors (29496389).

1123101211 is a wasteful number, since it uses less digits than its factorization.

1123101211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1123101211 is about 33512.7022336308. The cubic root of 1123101211 is about 1039.4564501256.

Adding to 1123101211 its reverse (1121013211), we get a palindrome (2244114422).

The spelling of 1123101211 in words is "one billion, one hundred twenty-three million, one hundred one thousand, two hundred eleven".