21322452450 has 96 divisors (see below), whose sum is σ = 59423446656. Its totient is φ = 5020392960.

The previous prime is 21322452433. The next prime is 21322452533. The reversal of 21322452450 is 5425422312.

It is a super-2 number, since 2×21322452450² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 192859 + ... + 282558.

It is an arithmetic number, because the mean of its divisors is an integer number (618994236).

Almost surely, 2^21322452450 is an apocalyptic number.

21322452450 is an abundant number, since it is smaller than the sum of its proper divisors (38100994206).

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

21322452450 is a wasteful number, since it uses less digits than its factorization.

21322452450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475468 (or 475463 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 21322452450 its reverse (5425422312), we get a palindrome (26747874762).

The spelling of 21322452450 in words is "twenty-one billion, three hundred twenty-two million, four hundred fifty-two thousand, four hundred fifty".