10021212112 has 10 divisors (see below), whose sum is σ = 19416098498. Its totient is φ = 5010606048.

The previous prime is 10021212101. The next prime is 10021212119. The reversal of 10021212112 is 21121212001.

It can be written as a sum of positive squares in only one way, i.e., 8810450496 + 1210761616 = 93864^2 + 34796^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10021212092 and 10021212101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021212119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313162863 + ... + 313162894.

Almost surely, 2^10021212112 is an apocalyptic number.

It is an amenable number.

10021212112 is a deficient number, since it is larger than the sum of its proper divisors (9394886386).

10021212112 is an equidigital number, since it uses as much as digits as its factorization.

10021212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626325765 (or 626325759 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10021212112 its reverse (21121212001), we get a palindrome (31142424113).

The spelling of 10021212112 in words is "ten billion, twenty-one million, two hundred twelve thousand, one hundred twelve".