1122221420 has 24 divisors (see below), whose sum is σ = 2385062064. Its totient is φ = 443479616.

The previous prime is 1122221413. The next prime is 1122221423. The reversal of 1122221420 is 241222211.

It is not an unprimeable number, because it can be changed into a prime (1122221423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 336359 + ... + 339678.

It is an arithmetic number, because the mean of its divisors is an integer number (99377586).

Almost surely, 2^1122221420 is an apocalyptic number.

1122221420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122221420 is an abundant number, since it is smaller than the sum of its proper divisors (1262840644).

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

1122221420 is a wasteful number, since it uses less digits than its factorization.

1122221420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676129 (or 676127 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1122221420 is about 33499.5734301200. The cubic root of 1122221420 is about 1039.1849568355.

Adding to 1122221420 its reverse (241222211), we get a palindrome (1363443631).

The spelling of 1122221420 in words is "one billion, one hundred twenty-two million, two hundred twenty-one thousand, four hundred twenty".