1320212000221 has 4 divisors (see below), whose sum is σ = 1326468929344. Its totient is φ = 1313955071100.

The previous prime is 1320212000213. The next prime is 1320212000231. The reversal of 1320212000221 is 1220002120231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1320212000221 - 2³ = 1320212000213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1320212000195 and 1320212000204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320212000231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3128464245 + ... + 3128464666.

It is an arithmetic number, because the mean of its divisors is an integer number (331617232336).

Almost surely, 2^{1320212000221} is an apocalyptic number.

It is an amenable number.

1320212000221 is a deficient number, since it is larger than the sum of its proper divisors (6256929123).

1320212000221 is an equidigital number, since it uses as much as digits as its factorization.

1320212000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6256929122.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1320212000221 its reverse (1220002120231), we get a palindrome (2540214120452).

The spelling of 1320212000221 in words is "one trillion, three hundred twenty billion, two hundred twelve million, two hundred twenty-one", and thus it is an aban number.