21002122341 has 24 divisors (see below), whose sum is σ = 31473746304. Its totient is φ = 13995283680.

The previous prime is 21002122301. The next prime is 21002122381. The reversal of 21002122341 is 14322120012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21002122301) and next prime (21002122381).

It is not a de Polignac number, because 21002122341 - 2⁷ = 21002122213 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002122301) 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, 575460 + ... + 610866.

It is an arithmetic number, because the mean of its divisors is an integer number (1311406096).

Almost surely, 2^21002122341 is an apocalyptic number.

It is an amenable number.

21002122341 is a deficient number, since it is larger than the sum of its proper divisors (10471623963).

21002122341 is an equidigital number, since it uses as much as digits as its factorization.

21002122341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37863 (or 37851 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 21002122341 its reverse (14322120012), we get a palindrome (35324242353).

The spelling of 21002122341 in words is "twenty-one billion, two million, one hundred twenty-two thousand, three hundred forty-one".