21202000212 has 24 divisors (see below), whose sum is σ = 52075088800. Its totient is φ = 6695368416.

The previous prime is 21202000201. The next prime is 21202000213. The reversal of 21202000212 is 21200020212.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202000213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46495387 + ... + 46495842.

Almost surely, 2^21202000212 is an apocalyptic number.

It is an amenable number.

21202000212 is an abundant number, since it is smaller than the sum of its proper divisors (30873088588).

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

21202000212 is a wasteful number, since it uses less digits than its factorization.

21202000212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92991255 (or 92991253 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 21202000212 its reverse (21200020212), we get a palindrome (42402020424).

The spelling of 21202000212 in words is "twenty-one billion, two hundred two million, two hundred twelve", and thus it is an aban number.