211200120220220 has 96 divisors (see below), whose sum is σ = 452084520888000. Its totient is φ = 82855461427200.

The previous prime is 211200120220181. The next prime is 211200120220223. The reversal of 211200120220220 is 22022021002112.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211200120220223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4113007106 + ... + 4113058454.

It is an arithmetic number, because the mean of its divisors is an integer number (4709213759250).

Almost surely, 2^{211200120220220} is an apocalyptic number.

211200120220220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211200120220220 is an abundant number, since it is smaller than the sum of its proper divisors (240884400667780).

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

211200120220220 is a wasteful number, since it uses less digits than its factorization.

211200120220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59439 (or 59437 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 211200120220220 its reverse (22022021002112), we get a palindrome (233222141222332).

The spelling of 211200120220220 in words is "two hundred eleven trillion, two hundred billion, one hundred twenty million, two hundred twenty thousand, two hundred twenty".