212020012100 has 144 divisors (see below), whose sum is σ = 513234859200. Its totient is φ = 75485329920.

The previous prime is 212020012079. The next prime is 212020012121. The reversal of 212020012100 is 1210020212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (212020012079) and next prime (212020012121).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32381027 + ... + 32387573.

Almost surely, 2^212020012100 is an apocalyptic number.

212020012100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212020012100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256617429600).

212020012100 is an abundant number, since it is smaller than the sum of its proper divisors (301214847100).

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

212020012100 is a wasteful number, since it uses less digits than its factorization.

212020012100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7462 (or 7455 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 212020012100 its reverse (1210020212), we get a palindrome (213230032312).

The spelling of 212020012100 in words is "two hundred twelve billion, twenty million, twelve thousand, one hundred".