1211122323 has 12 divisors (see below), whose sum is σ = 1779050520. Its totient is φ = 793729536.

The previous prime is 1211122321. The next prime is 1211122337. The reversal of 1211122323 is 3232211121.

It is not a de Polignac number, because 1211122323 - 2¹ = 1211122321 is a prime.

It is a super-3 number, since 3×1211122323³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1211122296 and 1211122305.

It is not an unprimeable number, because it can be changed into a prime (1211122321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1139886 + ... + 1140947.

It is an arithmetic number, because the mean of its divisors is an integer number (148254210).

Almost surely, 2^1211122323 is an apocalyptic number.

1211122323 is a deficient number, since it is larger than the sum of its proper divisors (567928197).

1211122323 is a wasteful number, since it uses less digits than its factorization.

1211122323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2280898 (or 2280895 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1211122323 is about 34801.1827816240. The cubic root of 1211122323 is about 1065.9315977379.

Adding to 1211122323 its reverse (3232211121), we get a palindrome (4443333444).

The spelling of 1211122323 in words is "one billion, two hundred eleven million, one hundred twenty-two thousand, three hundred twenty-three".