1122143204 has 48 divisors (see below), whose sum is σ = 2420697216. Its totient is φ = 443232000.

The previous prime is 1122143201. The next prime is 1122143233. The reversal of 1122143204 is 4023412211.

It is not an unprimeable number, because it can be changed into a prime (1122143201) 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, 274979 + ... + 279029.

It is an arithmetic number, because the mean of its divisors is an integer number (50431192).

Almost surely, 2^1122143204 is an apocalyptic number.

1122143204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1122143204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1210348608).

1122143204 is an abundant number, since it is smaller than the sum of its proper divisors (1298554012).

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

1122143204 is a wasteful number, since it uses less digits than its factorization.

1122143204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4836 (or 4834 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1122143204 is about 33498.4059919274. The cubic root of 1122143204 is about 1039.1608134186.

Adding to 1122143204 its reverse (4023412211), we get a palindrome (5145555415).

The spelling of 1122143204 in words is "one billion, one hundred twenty-two million, one hundred forty-three thousand, two hundred four".