10021020212 has 48 divisors (see below), whose sum is σ = 20486860800. Its totient is φ = 4199569632.

The previous prime is 10021020211. The next prime is 10021020253. The reversal of 10021020212 is 21202012001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10021020193 and 10021020202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021020211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1838363 + ... + 1843805.

It is an arithmetic number, because the mean of its divisors is an integer number (426809600).

Almost surely, 2^10021020212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10021020212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10243430400).

10021020212 is an abundant number, since it is smaller than the sum of its proper divisors (10465840588).

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

10021020212 is a wasteful number, since it uses less digits than its factorization.

10021020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6900 (or 6898 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 10021020212 its reverse (21202012001), we get a palindrome (31223032213).

The spelling of 10021020212 in words is "ten billion, twenty-one million, twenty thousand, two hundred twelve".