1212221021120 has 28 divisors (see below), whose sum is σ = 2886601307304. Its totient is φ = 484888408320.

The previous prime is 1212221021107. The next prime is 1212221021213. The reversal of 1212221021120 is 211201222121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1894095026 + ... + 1894095665.

Almost surely, 2^{1212221021120} is an apocalyptic number.

1212221021120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212221021120 is an abundant number, since it is smaller than the sum of its proper divisors (1674380286184).

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

1212221021120 is an equidigital number, since it uses as much as digits as its factorization.

1212221021120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3788190708 (or 3788190698 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1212221021120 its reverse (211201222121), we get a palindrome (1423422243241).

The spelling of 1212221021120 in words is "one trillion, two hundred twelve billion, two hundred twenty-one million, twenty-one thousand, one hundred twenty".