10021000021212 has 48 divisors (see below), whose sum is σ = 24613282386560. Its totient is φ = 3164487766848.

The previous prime is 10021000021187. The next prime is 10021000021213. The reversal of 10021000021212 is 21212000012001.

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 (10021000021213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22857138 + ... + 23291430.

Almost surely, 2^{10021000021212} is an apocalyptic number.

10021000021212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10021000021212 is an abundant number, since it is smaller than the sum of its proper divisors (14592282365348).

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

10021000021212 is a wasteful number, since it uses less digits than its factorization.

10021000021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535522 (or 535520 counting only the distinct ones).

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

Adding to 10021000021212 its reverse (21212000012001), we get a palindrome (31233000033213).

The spelling of 10021000021212 in words is "ten trillion, twenty-one billion, twenty-one thousand, two hundred twelve".