1221200012202 has 64 divisors (see below), whose sum is σ = 2477462270976. Its totient is φ = 401267462400.

The previous prime is 1221200012189. The next prime is 1221200012231. The reversal of 1221200012202 is 2022100021221.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 114650577 + ... + 114661227.

It is an arithmetic number, because the mean of its divisors is an integer number (38710347984).

Almost surely, 2^{1221200012202} is an apocalyptic number.

1221200012202 is an abundant number, since it is smaller than the sum of its proper divisors (1256262258774).

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

1221200012202 is a wasteful number, since it uses less digits than its factorization.

1221200012202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11675.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1221200012202 its reverse (2022100021221), we get a palindrome (3243300033423).

The spelling of 1221200012202 in words is "one trillion, two hundred twenty-one billion, two hundred million, twelve thousand, two hundred two".