21022003245 has 8 divisors (see below), whose sum is σ = 33635205216. Its totient is φ = 11211735056.

The previous prime is 21022003181. The next prime is 21022003333. The reversal of 21022003245 is 54230022012.

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

It is a cyclic number.

It is not a de Polignac number, because 21022003245 - 2⁶ = 21022003181 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 700733427 + ... + 700733456.

It is an arithmetic number, because the mean of its divisors is an integer number (4204400652).

Almost surely, 2^21022003245 is an apocalyptic number.

It is an amenable number.

21022003245 is a deficient number, since it is larger than the sum of its proper divisors (12613201971).

21022003245 is a wasteful number, since it uses less digits than its factorization.

21022003245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401466891.

The product of its (nonzero) digits is 960, while the sum is 21.

Adding to 21022003245 its reverse (54230022012), we get a palindrome (75252025257).

The spelling of 21022003245 in words is "twenty-one billion, twenty-two million, three thousand, two hundred forty-five".