100212120012220 has 48 divisors (see below), whose sum is σ = 210818165675040. Its totient is φ = 40013873185536.

The previous prime is 100212120012217. The next prime is 100212120012383. The reversal of 100212120012220 is 22210021212001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 100212120012194 and 100212120012203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87864771 + ... + 88997989.

It is an arithmetic number, because the mean of its divisors is an integer number (4392045118230).

Almost surely, 2^{100212120012220} is an apocalyptic number.

100212120012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100212120012220 is an abundant number, since it is smaller than the sum of its proper divisors (110606045662820).

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

100212120012220 is a wasteful number, since it uses less digits than its factorization.

100212120012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141054 (or 1141052 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 100212120012220 its reverse (22210021212001), we get a palindrome (122422141224221).

The spelling of 100212120012220 in words is "one hundred trillion, two hundred twelve billion, one hundred twenty million, twelve thousand, two hundred twenty".