211200022112220 has 144 divisors (see below), whose sum is σ = 666061414200000. Its totient is φ = 54104680498176.

The previous prime is 211200022112207. The next prime is 211200022112221. The reversal of 211200022112220 is 22211220002112.

It is a happy number.

211200022112220 is a `hidden beast` number, since 2 + 11 + 200 + 0 + 221 + 12 + 220 = 666.

211200022112220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 211200022112193 and 211200022112202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211200022112221) 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, 100618945 + ... + 102696504.

It is an arithmetic number, because the mean of its divisors is an integer number (4625426487500).

Almost surely, 2^{211200022112220} is an apocalyptic number.

211200022112220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211200022112220 is an abundant number, since it is smaller than the sum of its proper divisors (454861392087780).

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

211200022112220 is a wasteful number, since it uses less digits than its factorization.

211200022112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203315692 (or 203315687 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 211200022112220 its reverse (22211220002112), we get a palindrome (233411242114332).

The spelling of 211200022112220 in words is "two hundred eleven trillion, two hundred billion, twenty-two million, one hundred twelve thousand, two hundred twenty".