1220120221210 has 64 divisors (see below), whose sum is σ = 2500353826560. Its totient is φ = 424336506880.

The previous prime is 1220120221181. The next prime is 1220120221219. The reversal of 1220120221210 is 121220210221.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1220120221219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23941236 + ... + 23992144.

It is an arithmetic number, because the mean of its divisors is an integer number (39068028540).

Almost surely, 2^{1220120221210} is an apocalyptic number.

1220120221210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220120221210 is an abundant number, since it is smaller than the sum of its proper divisors (1280233605350).

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

1220120221210 is a wasteful number, since it uses less digits than its factorization.

1220120221210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60423.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1220120221210 its reverse (121220210221), we get a palindrome (1341340431431).

The spelling of 1220120221210 in words is "one trillion, two hundred twenty billion, one hundred twenty million, two hundred twenty-one thousand, two hundred ten".