21002302212 has 24 divisors (see below), whose sum is σ = 49363079136. Its totient is φ = 6949666368.

The previous prime is 21002302177. The next prime is 21002302247. The reversal of 21002302212 is 21220320012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21002302177) and next prime (21002302247).

It is a junction number, because it is equal to n+sod(n) for n = 21002302191 and 21002302200.

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, 6385918 + ... + 6389205.

It is an arithmetic number, because the mean of its divisors is an integer number (2056794964).

Almost surely, 2^21002302212 is an apocalyptic number.

It is an amenable number.

21002302212 is an abundant number, since it is smaller than the sum of its proper divisors (28360776924).

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

21002302212 is a wasteful number, since it uses less digits than its factorization.

21002302212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12775267 (or 12775265 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21002302212 its reverse (21220320012), we get a palindrome (42222622224).

The spelling of 21002302212 in words is "twenty-one billion, two million, three hundred two thousand, two hundred twelve".