100212212020020 has 48 divisors (see below), whose sum is σ = 280594810442688. Its totient is φ = 26723197797120.

The previous prime is 100212212020007. The next prime is 100212212020021. The reversal of 100212212020020 is 20020212212001.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100212212020021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30351960 + ... + 33491280.

It is an arithmetic number, because the mean of its divisors is an integer number (5845725217556).

Almost surely, 2^{100212212020020} is an apocalyptic number.

100212212020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100212212020020 is an abundant number, since it is smaller than the sum of its proper divisors (180382598422668).

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

100212212020020 is a wasteful number, since it uses less digits than its factorization.

100212212020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3671360 (or 3671358 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 100212212020020 its reverse (20020212212001), we get a palindrome (120232424232021).

The spelling of 100212212020020 in words is "one hundred trillion, two hundred twelve billion, two hundred twelve million, twenty thousand, twenty".