1202210001220 has 12 divisors (see below), whose sum is σ = 2524641002604. Its totient is φ = 480884000480.

The previous prime is 1202210001199. The next prime is 1202210001221. The reversal of 1202210001220 is 221000122021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 768764211264 + 433445789956 = 876792^2 + 658366^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1202210001220.

It is not an unprimeable number, because it can be changed into a prime (1202210001221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30055250011 + ... + 30055250050.

It is an arithmetic number, because the mean of its divisors is an integer number (210386750217).

Almost surely, 2^{1202210001220} is an apocalyptic number.

1202210001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1202210001220 is an abundant number, since it is smaller than the sum of its proper divisors (1322431001384).

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

1202210001220 is a wasteful number, since it uses less digits than its factorization.

1202210001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60110500070 (or 60110500068 counting only the distinct ones).

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

Adding to 1202210001220 its reverse (221000122021), we get a palindrome (1423210123241).

The spelling of 1202210001220 in words is "one trillion, two hundred two billion, two hundred ten million, one thousand, two hundred twenty".