1212001300221 has 8 divisors (see below), whose sum is σ = 1643391593760. Its totient is φ = 794305936752.

The previous prime is 1212001300217. The next prime is 1212001300277. The reversal of 1212001300221 is 1220031002121.

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

It is not a de Polignac number, because 1212001300221 - 2² = 1212001300217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1212001300221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212001300291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3423732310 + ... + 3423732663.

It is an arithmetic number, because the mean of its divisors is an integer number (205423949220).

Almost surely, 2^{1212001300221} is an apocalyptic number.

It is an amenable number.

1212001300221 is a deficient number, since it is larger than the sum of its proper divisors (431390293539).

1212001300221 is an equidigital number, since it uses as much as digits as its factorization.

1212001300221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6847465035.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1212001300221 its reverse (1220031002121), we get a palindrome (2432032302342).

The spelling of 1212001300221 in words is "one trillion, two hundred twelve billion, one million, three hundred thousand, two hundred twenty-one".