22420041021 has 24 divisors (see below), whose sum is σ = 38958803520. Its totient is φ = 12137164416.

The previous prime is 22420041019. The next prime is 22420041023. The reversal of 22420041021 is 12014002422.

It is an interprime number because it is at equal distance from previous prime (22420041019) and next prime (22420041023).

It is not a de Polignac number, because 22420041021 - 2¹ = 22420041019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22420040985 and 22420041003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22420041023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9363900 + ... + 9366293.

It is an arithmetic number, because the mean of its divisors is an integer number (1623283480).

Almost surely, 2^22420041021 is an apocalyptic number.

22420041021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22420041021 is a deficient number, since it is larger than the sum of its proper divisors (16538762499).

22420041021 is a wasteful number, since it uses less digits than its factorization.

22420041021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18730225 (or 18730222 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 22420041021 its reverse (12014002422), we get a palindrome (34434043443).

The spelling of 22420041021 in words is "twenty-two billion, four hundred twenty million, forty-one thousand, twenty-one".