1201220210221 has 8 divisors (see below), whose sum is σ = 1201865925888. Its totient is φ = 1200574674000.

The previous prime is 1201220210143. The next prime is 1201220210263. The reversal of 1201220210221 is 1220120221021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1201220210221 - 2¹¹ = 1201220208173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201220210195 and 1201220210204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201220216221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14602476 + ... + 14684506.

It is an arithmetic number, because the mean of its divisors is an integer number (150233240736).

Almost surely, 2^{1201220210221} is an apocalyptic number.

It is an amenable number.

1201220210221 is a deficient number, since it is larger than the sum of its proper divisors (645715667).

1201220210221 is an equidigital number, since it uses as much as digits as its factorization.

1201220210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89723.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1201220210221 its reverse (1220120221021), we get a palindrome (2421340431242).

The spelling of 1201220210221 in words is "one trillion, two hundred one billion, two hundred twenty million, two hundred ten thousand, two hundred twenty-one".