1123121214 has 96 divisors (see below), whose sum is σ = 2604585984. Its totient is φ = 362517120.

The previous prime is 1123121177. The next prime is 1123121221. The reversal of 1123121214 is 4121213211.

It is a super-2 number, since 2×1123121214² = 2522802522673667592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4660134 + ... + 4660374.

It is an arithmetic number, because the mean of its divisors is an integer number (27131104).

Almost surely, 2^1123121214 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123121214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1302292992).

1123121214 is an abundant number, since it is smaller than the sum of its proper divisors (1481464770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123121214 is a wasteful number, since it uses less digits than its factorization.

1123121214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524 (or 512 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 1123121214 is about 33513.0006713812. Note that the first 3 decimals coincide. The cubic root of 1123121214 is about 1039.4626211705.

Adding to 1123121214 its reverse (4121213211), we get a palindrome (5244334425).

It can be divided in two parts, 112312 and 1214, that added together give a triangular number (113526 = T₄₇₆).

The spelling of 1123121214 in words is "one billion, one hundred twenty-three million, one hundred twenty-one thousand, two hundred fourteen".