1220021120200 has 48 divisors (see below), whose sum is σ = 2934361156500. Its totient is φ = 471180568320.

The previous prime is 1220021120191. The next prime is 1220021120221. The reversal of 1220021120200 is 20211200221.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 833353545924 + 386667574276 = 912882^2 + 621826^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105168435 + ... + 105180034.

Almost surely, 2^{1220021120200} is an apocalyptic number.

1220021120200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220021120200 is an abundant number, since it is smaller than the sum of its proper divisors (1714340036300).

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

1220021120200 is a wasteful number, since it uses less digits than its factorization.

1220021120200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210348514 (or 210348505 counting only the distinct ones).

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

Adding to 1220021120200 its reverse (20211200221), we get a palindrome (1240232320421).

The spelling of 1220021120200 in words is "one trillion, two hundred twenty billion, twenty-one million, one hundred twenty thousand, two hundred".