210120110101220 has 48 divisors (see below), whose sum is σ = 482151333480768. Its totient is φ = 76282667832960.

The previous prime is 210120110101177. The next prime is 210120110101241. The reversal of 210120110101220 is 22101011021012.

It is a junction number, because it is equal to n+sod(n) for n = 210120110101195 and 210120110101204.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 778895654 + ... + 779165373.

It is an arithmetic number, because the mean of its divisors is an integer number (10044819447516).

Almost surely, 2^{210120110101220} is an apocalyptic number.

210120110101220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210120110101220 is an abundant number, since it is smaller than the sum of its proper divisors (272031223379548).

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

210120110101220 is a wasteful number, since it uses less digits than its factorization.

210120110101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558061660 (or 1558061658 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 210120110101220 its reverse (22101011021012), we get a palindrome (232221121122232).

The spelling of 210120110101220 in words is "two hundred ten trillion, one hundred twenty billion, one hundred ten million, one hundred one thousand, two hundred twenty".