100020100021212 has 48 divisors (see below), whose sum is σ = 269361061466112. Its totient is φ = 28294229140800.

The previous prime is 100020100021211. The next prime is 100020100021213. The reversal of 100020100021212 is 212120001020001.

It is an interprime number because it is at equal distance from previous prime (100020100021211) and next prime (100020100021213).

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 (100020100021211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5894622588 + ... + 5894639555.

It is an arithmetic number, because the mean of its divisors is an integer number (5611688780544).

Almost surely, 2^{100020100021212} is an apocalyptic number.

100020100021212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100020100021212 is an abundant number, since it is smaller than the sum of its proper divisors (169340961444900).

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

100020100021212 is a wasteful number, since it uses less digits than its factorization.

100020100021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11789262258 (or 11789262256 counting only the distinct ones).

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

Adding to 100020100021212 its reverse (212120001020001), we get a palindrome (312140101041213).

The spelling of 100020100021212 in words is "one hundred trillion, twenty billion, one hundred million, twenty-one thousand, two hundred twelve".