21002242202 has 16 divisors (see below), whose sum is σ = 31581094272. Its totient is φ = 10475244000.

The previous prime is 21002242171. The next prime is 21002242267. The reversal of 21002242202 is 20224220012.

It is a super-2 number, since 2×21002242202² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1399913 + ... + 1414835.

It is an arithmetic number, because the mean of its divisors is an integer number (1973818392).

Almost surely, 2^21002242202 is an apocalyptic number.

21002242202 is a deficient number, since it is larger than the sum of its proper divisors (10578852070).

21002242202 is a wasteful number, since it uses less digits than its factorization.

21002242202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16613.

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 21002242202 its reverse (20224220012), we get a palindrome (41226462214).

The spelling of 21002242202 in words is "twenty-one billion, two million, two hundred forty-two thousand, two hundred two".