210021020212 has 12 divisors (see below), whose sum is σ = 367616045440. Its totient is φ = 104987864376.

The previous prime is 210021020207. The next prime is 210021020213. The reversal of 210021020212 is 212020120012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 210021020192 and 210021020201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210021020213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5640558 + ... + 5677669.

Almost surely, 2^210021020212 is an apocalyptic number.

It is an amenable number.

210021020212 is a deficient number, since it is larger than the sum of its proper divisors (157595025228).

210021020212 is a wasteful number, since it uses less digits than its factorization.

210021020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11322870 (or 11322868 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 210021020212 its reverse (212020120012), we get a palindrome (422041140224).

The spelling of 210021020212 in words is "two hundred ten billion, twenty-one million, twenty thousand, two hundred twelve".