212001200100 has 144 divisors (see below), whose sum is σ = 717415540800. Its totient is φ = 53558184960.

The previous prime is 212001200077. The next prime is 212001200101. The reversal of 212001200100 is 1002100212.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (212001200101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2014989 + ... + 2117588.

Almost surely, 2^212001200100 is an apocalyptic number.

212001200100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212001200100 is an abundant number, since it is smaller than the sum of its proper divisors (505414340700).

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

212001200100 is a wasteful number, since it uses less digits than its factorization.

212001200100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4132619 (or 4132606 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 212001200100 its reverse (1002100212), we get a palindrome (213003300312).

The spelling of 212001200100 in words is "two hundred twelve billion, one million, two hundred thousand, one hundred".