210120101201220 has 96 divisors (see below), whose sum is σ = 672524439552000. Its totient is φ = 48017443438464.

The previous prime is 210120101201201. The next prime is 210120101201267. The reversal of 210120101201220 is 22102101021012.

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 210120101201220.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50108400 + ... + 54139559.

It is an arithmetic number, because the mean of its divisors is an integer number (7005462912000).

Almost surely, 2^{210120101201220} is an apocalyptic number.

210120101201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210120101201220 is an abundant number, since it is smaller than the sum of its proper divisors (462404338350780).

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

210120101201220 is a wasteful number, since it uses less digits than its factorization.

210120101201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104252777 (or 104252775 counting only the distinct ones).

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

Adding to 210120101201220 its reverse (22102101021012), we get a palindrome (232222202222232).

The spelling of 210120101201220 in words is "two hundred ten trillion, one hundred twenty billion, one hundred one million, two hundred one thousand, two hundred twenty".