10202021212 has 6 divisors (see below), whose sum is σ = 17853537128. Its totient is φ = 5101010604.

The previous prime is 10202021119. The next prime is 10202021213. The reversal of 10202021212 is 21212020201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10202021192 and 10202021201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10202021213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275252648 + ... + 1275252655.

Almost surely, 2^10202021212 is an apocalyptic number.

It is an amenable number.

10202021212 is a deficient number, since it is larger than the sum of its proper divisors (7651515916).

10202021212 is a wasteful number, since it uses less digits than its factorization.

10202021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2550505307 (or 2550505305 counting only the distinct ones).

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

Adding to 10202021212 its reverse (21212020201), we get a palindrome (31414041413).

The spelling of 10202021212 in words is "ten billion, two hundred two million, twenty-one thousand, two hundred twelve".