212020001100 has 432 divisors, whose sum is σ = 702299549952. Its totient is φ = 53431902720.

The previous prime is 212020001071. The next prime is 212020001131. The reversal of 212020001100 is 1100020212.

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

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 376589419 + ... + 376589981.

Almost surely, 2^212020001100 is an apocalyptic number.

212020001100 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 212020001100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (351149774976).

212020001100 is an abundant number, since it is smaller than the sum of its proper divisors (490279548852).

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

212020001100 is a wasteful number, since it uses less digits than its factorization.

212020001100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926 (or 916 counting only the distinct ones).

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

Adding to 212020001100 its reverse (1100020212), we get a palindrome (213120021312).

The spelling of 212020001100 in words is "two hundred twelve billion, twenty million, one thousand, one hundred".