211212000212100 has 72 divisors (see below), whose sum is σ = 611126471444160. Its totient is φ = 56321379703680.

The previous prime is 211212000212077. The next prime is 211212000212119. The reversal of 211212000212100 is 1212000212112.

It is a super-2 number, since 2×211212000212100² (a number of 29 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 211212000212100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2066815 + ... + 20656614.

Almost surely, 2^{211212000212100} is an apocalyptic number.

211212000212100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211212000212100 is an abundant number, since it is smaller than the sum of its proper divisors (399914471232060).

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

211212000212100 is a wasteful number, since it uses less digits than its factorization.

211212000212100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22754429 (or 22754422 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 211212000212100 its reverse (1212000212112), we get a palindrome (212424000424212).

The spelling of 211212000212100 in words is "two hundred eleven trillion, two hundred twelve billion, two hundred twelve thousand, one hundred".