21211422124 has 6 divisors (see below), whose sum is σ = 37119988724. Its totient is φ = 10605711060.

The previous prime is 21211422097. The next prime is 21211422131. The reversal of 21211422124 is 42122411212.

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 = 21211422095 and 21211422104.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2651427762 + ... + 2651427769.

Almost surely, 2^21211422124 is an apocalyptic number.

It is an amenable number.

21211422124 is a deficient number, since it is larger than the sum of its proper divisors (15908566600).

21211422124 is a wasteful number, since it uses less digits than its factorization.

21211422124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5302855535 (or 5302855533 counting only the distinct ones).

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

Adding to 21211422124 its reverse (42122411212), we get a palindrome (63333833336).

The spelling of 21211422124 in words is "twenty-one billion, two hundred eleven million, four hundred twenty-two thousand, one hundred twenty-four".