10120021212 has 48 divisors (see below), whose sum is σ = 27180903680. Its totient is φ = 2870629632.

The previous prime is 10120021187. The next prime is 10120021213. The reversal of 10120021212 is 21212002101.

10120021212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 (10120021213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 421693 + ... + 445044.

Almost surely, 2^10120021212 is an apocalyptic number.

10120021212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10120021212 is an abundant number, since it is smaller than the sum of its proper divisors (17060882468).

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

10120021212 is a wasteful number, since it uses less digits than its factorization.

10120021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866890 (or 866888 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10120021212 its reverse (21212002101), we get a palindrome (31332023313).

The spelling of 10120021212 in words is "ten billion, one hundred twenty million, twenty-one thousand, two hundred twelve".