211201112102220 has 144 divisors (see below), whose sum is σ = 676744351395840. Its totient is φ = 53167532830848.

The previous prime is 211201112102171. The next prime is 211201112102243. The reversal of 211201112102220 is 22201211102112.

211201112102220 is a `hidden beast` number, since 2 + 1 + 120 + 111 + 210 + 2 + 220 = 666.

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 = 211201112102193 and 211201112102202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 108139404 + ... + 110075123.

It is an arithmetic number, because the mean of its divisors is an integer number (4699613551360).

Almost surely, 2^{211201112102220} is an apocalyptic number.

211201112102220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211201112102220 is an abundant number, since it is smaller than the sum of its proper divisors (465543239293620).

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

211201112102220 is a wasteful number, since it uses less digits than its factorization.

211201112102220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218214844 (or 218214839 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 211201112102220 its reverse (22201211102112), we get a palindrome (233402323204332).

The spelling of 211201112102220 in words is "two hundred eleven trillion, two hundred one billion, one hundred twelve million, one hundred two thousand, two hundred twenty".