1222221340 has 48 divisors (see below), whose sum is σ = 2642274432. Its totient is φ = 474679296.

The previous prime is 1222221337. The next prime is 1222221347. The reversal of 1222221340 is 431222221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222221347) 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, 96877 + ... + 108763.

It is an arithmetic number, because the mean of its divisors is an integer number (55047384).

Almost surely, 2^1222221340 is an apocalyptic number.

1222221340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222221340 is an abundant number, since it is smaller than the sum of its proper divisors (1420053092).

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

1222221340 is a wasteful number, since it uses less digits than its factorization.

1222221340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12046 (or 12044 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1222221340 is about 34960.2823215145. The cubic root of 1222221340 is about 1069.1778527478.

Adding to 1222221340 its reverse (431222221), we get a palindrome (1653443561).

The spelling of 1222221340 in words is "one billion, two hundred twenty-two million, two hundred twenty-one thousand, three hundred forty".