22100421043 has 4 divisors (see below), whose sum is σ = 22105621728. Its totient is φ = 22095220360.

The previous prime is 22100420959. The next prime is 22100421047. The reversal of 22100421043 is 34012400122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22100421043 - 2¹⁷ = 22100289971 is a prime.

It is a super-2 number, since 2×22100421043² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22100421043.

It is not an unprimeable number, because it can be changed into a prime (22100421047) 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 3 ways as a sum of consecutive naturals, for example, 2593963 + ... + 2602468.

It is an arithmetic number, because the mean of its divisors is an integer number (5526405432).

Almost surely, 2^22100421043 is an apocalyptic number.

22100421043 is a deficient number, since it is larger than the sum of its proper divisors (5200685).

22100421043 is an equidigital number, since it uses as much as digits as its factorization.

22100421043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5200684.

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

Adding to 22100421043 its reverse (34012400122), we get a palindrome (56112821165).

The spelling of 22100421043 in words is "twenty-two billion, one hundred million, four hundred twenty-one thousand, forty-three".