1222100043 has 16 divisors (see below), whose sum is σ = 1646921760. Its totient is φ = 806029056.

The previous prime is 1222100041. The next prime is 1222100071. The reversal of 1222100043 is 3400012221.

It is not a de Polignac number, because 1222100043 - 2¹ = 1222100041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1222099995 and 1222100031.

It is not an unprimeable number, because it can be changed into a prime (1222100041) 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, 245071 + ... + 250007.

It is an arithmetic number, because the mean of its divisors is an integer number (102932610).

Almost surely, 2^1222100043 is an apocalyptic number.

1222100043 is a deficient number, since it is larger than the sum of its proper divisors (424821717).

1222100043 is a wasteful number, since it uses less digits than its factorization.

1222100043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5806.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1222100043 is about 34958.5474955697. The cubic root of 1222100043 is about 1069.1424820796.

Adding to 1222100043 its reverse (3400012221), we get a palindrome (4622112264).

The spelling of 1222100043 in words is "one billion, two hundred twenty-two million, one hundred thousand, forty-three".