1220203021208 has 16 divisors (see below), whose sum is σ = 2288056351680. Its totient is φ = 610054660768.

The previous prime is 1220203021181. The next prime is 1220203021267. The reversal of 1220203021208 is 8021203020221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5745416 + ... + 5954007.

It is an arithmetic number, because the mean of its divisors is an integer number (143003521980).

Almost surely, 2^{1220203021208} is an apocalyptic number.

It is an amenable number.

1220203021208 is a deficient number, since it is larger than the sum of its proper divisors (1067853330472).

1220203021208 is a wasteful number, since it uses less digits than its factorization.

1220203021208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11712466 (or 11712462 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 1220203021208 its reverse (8021203020221), we get a palindrome (9241406041429).

The spelling of 1220203021208 in words is "one trillion, two hundred twenty billion, two hundred three million, twenty-one thousand, two hundred eight".