21203022324 has 24 divisors (see below), whose sum is σ = 53971329888. Its totient is φ = 6425158240.

The previous prime is 21203022299. The next prime is 21203022341. The reversal of 21203022324 is 42322030212.

It is a self number, because there is not a number n which added to its sum of digits gives 21203022324.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80314347 + ... + 80314610.

It is an arithmetic number, because the mean of its divisors is an integer number (2248805412).

Almost surely, 2^21203022324 is an apocalyptic number.

It is an amenable number.

21203022324 is an abundant number, since it is smaller than the sum of its proper divisors (32768307564).

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

21203022324 is a wasteful number, since it uses less digits than its factorization.

21203022324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160628975 (or 160628973 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 21203022324 its reverse (42322030212), we get a palindrome (63525052536).

The spelling of 21203022324 in words is "twenty-one billion, two hundred three million, twenty-two thousand, three hundred twenty-four".