22121421124 has 24 divisors (see below), whose sum is σ = 42236143488. Its totient is φ = 10054158240.

The previous prime is 22121421121. The next prime is 22121421151. The reversal of 22121421124 is 42112412122.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 22121421095 and 22121421104.

It is not an unprimeable number, because it can be changed into a prime (22121421121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 552982 + ... + 591634.

It is an arithmetic number, because the mean of its divisors is an integer number (1759839312).

Almost surely, 2^22121421124 is an apocalyptic number.

It is an amenable number.

22121421124 is a deficient number, since it is larger than the sum of its proper divisors (20114722364).

22121421124 is a wasteful number, since it uses less digits than its factorization.

22121421124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51675 (or 51673 counting only the distinct ones).

The product of its digits is 512, while the sum is 22.

Adding to 22121421124 its reverse (42112412122), we get a palindrome (64233833246).

The spelling of 22121421124 in words is "twenty-two billion, one hundred twenty-one million, four hundred twenty-one thousand, one hundred twenty-four".