21302222050 has 12 divisors (see below), whose sum is σ = 39622133106. Its totient is φ = 8520888800.

The previous prime is 21302222027. The next prime is 21302222063. The reversal of 21302222050 is 5022220312.

It can be written as a sum of positive squares in 3 ways, for example, as 15834950569 + 5467271481 = 125837^2 + 73941^2 .

It is a super-3 number, since 3×21302222050³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 213022171 + ... + 213022270.

Almost surely, 2^21302222050 is an apocalyptic number.

21302222050 is a deficient number, since it is larger than the sum of its proper divisors (18319911056).

21302222050 is a wasteful number, since it uses less digits than its factorization.

21302222050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426044453 (or 426044448 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

Adding to 21302222050 its reverse (5022220312), we get a palindrome (26324442362).

The spelling of 21302222050 in words is "twenty-one billion, three hundred two million, two hundred twenty-two thousand, fifty".