1210120200220 has 24 divisors (see below), whose sum is σ = 2541331772784. Its totient is φ = 484032965376.

The previous prime is 1210120200197. The next prime is 1210120200253. The reversal of 1210120200220 is 220020210121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1210120200220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276637 + ... + 1580116.

It is an arithmetic number, because the mean of its divisors is an integer number (105888823866).

Almost surely, 2^{1210120200220} is an apocalyptic number.

1210120200220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210120200220 is an abundant number, since it is smaller than the sum of its proper divisors (1331211572564).

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

1210120200220 is a wasteful number, since it uses less digits than its factorization.

1210120200220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889349 (or 1889347 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1210120200220 its reverse (220020210121), we get a palindrome (1430140410341).

Subtracting from 1210120200220 its reverse (220020210121), we obtain a palindrome (990099990099).

The spelling of 1210120200220 in words is "one trillion, two hundred ten billion, one hundred twenty million, two hundred thousand, two hundred twenty".