1210002012220 has 48 divisors (see below), whose sum is σ = 2658994309440. Its totient is φ = 461645735936.

The previous prime is 1210002012199. The next prime is 1210002012229. The reversal of 1210002012220 is 222102000121.

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 1210002012220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210002012229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3563455 + ... + 3888214.

It is an arithmetic number, because the mean of its divisors is an integer number (55395714780).

Almost surely, 2^{1210002012220} is an apocalyptic number.

1210002012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210002012220 is an abundant number, since it is smaller than the sum of its proper divisors (1448992297220).

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

1210002012220 is a wasteful number, since it uses less digits than its factorization.

1210002012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7452054 (or 7452052 counting only the distinct ones).

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

Adding to 1210002012220 its reverse (222102000121), we get a palindrome (1432104012341).

The spelling of 1210002012220 in words is "one trillion, two hundred ten billion, two million, twelve thousand, two hundred twenty".