21422221041 has 16 divisors (see below), whose sum is σ = 31475466176. Its totient is φ = 12876325056.

The previous prime is 21422220977. The next prime is 21422221097. The reversal of 21422221041 is 14012222412.

It is not a de Polignac number, because 21422221041 - 2⁶ = 21422220977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21422220999 and 21422221017.

It is not an unprimeable number, because it can be changed into a prime (21422228041) 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, 6385390 + ... + 6388743.

It is an arithmetic number, because the mean of its divisors is an integer number (1967216636).

Almost surely, 2^21422221041 is an apocalyptic number.

It is an amenable number.

21422221041 is a deficient number, since it is larger than the sum of its proper divisors (10053245135).

21422221041 is a wasteful number, since it uses less digits than its factorization.

21422221041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12774192.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 21422221041 its reverse (14012222412), we get a palindrome (35434443453).

The spelling of 21422221041 in words is "twenty-one billion, four hundred twenty-two million, two hundred twenty-one thousand, forty-one".