21424202022 has 8 divisors (see below), whose sum is σ = 42848404056. Its totient is φ = 7141400672.

The previous prime is 21424201991. The next prime is 21424202057. The reversal of 21424202022 is 22020242412.

It is a sphenic number, since it is the product of 3 distinct primes.

21424202022 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 21424202022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1785350163 + ... + 1785350174.

It is an arithmetic number, because the mean of its divisors is an integer number (5356050507).

Almost surely, 2^21424202022 is an apocalyptic number.

21424202022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21424202022 is a wasteful number, since it uses less digits than its factorization.

21424202022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3570700342.

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 21424202022 its reverse (22020242412), we get a palindrome (43444444434).

It can be divided in two parts, 21424 and 202022, that added together give a triangular number (223446 = T₆₆₈).

The spelling of 21424202022 in words is "twenty-one billion, four hundred twenty-four million, two hundred two thousand, twenty-two".