1122200440 has 32 divisors (see below), whose sum is σ = 2560520160. Its totient is φ = 442556800.

The previous prime is 1122200437. The next prime is 1122200449. The reversal of 1122200440 is 440022211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122200449) 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, 194731 + ... + 200410.

It is an arithmetic number, because the mean of its divisors is an integer number (80016255).

Almost surely, 2^1122200440 is an apocalyptic number.

1122200440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122200440 is an abundant number, since it is smaller than the sum of its proper divisors (1438319720).

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

1122200440 is a wasteful number, since it uses less digits than its factorization.

1122200440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395223 (or 395219 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1122200440 is about 33499.2602903407. The cubic root of 1122200440 is about 1039.1784809191.

Adding to 1122200440 its reverse (440022211), we get a palindrome (1562222651).

The spelling of 1122200440 in words is "one billion, one hundred twenty-two million, two hundred thousand, four hundred forty".