1211214403321 has 8 divisors (see below), whose sum is σ = 1311143214920. Its totient is φ = 1112251087872.

The previous prime is 1211214403319. The next prime is 1211214403337. The reversal of 1211214403321 is 1233044121121.

It can be written as a sum of positive squares in 4 ways, for example, as 96838593721 + 1114375809600 = 311189^2 + 1055640^2 .

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 1211214403321 - 2¹ = 1211214403319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211214403121) 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, 241371426 + ... + 241376443.

It is an arithmetic number, because the mean of its divisors is an integer number (163892901865).

Almost surely, 2^{1211214403321} is an apocalyptic number.

It is an amenable number.

1211214403321 is a deficient number, since it is larger than the sum of its proper divisors (99928811599).

1211214403321 is a wasteful number, since it uses less digits than its factorization.

1211214403321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482748075.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 1211214403321 its reverse (1233044121121), we get a palindrome (2444258524442).

The spelling of 1211214403321 in words is "one trillion, two hundred eleven billion, two hundred fourteen million, four hundred three thousand, three hundred twenty-one".