1341221403421 has 8 divisors (see below), whose sum is σ = 1350404307000. Its totient is φ = 1332040919040.

The previous prime is 1341221403377. The next prime is 1341221403427. The reversal of 1341221403421 is 1243041221431.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 15027327396 + 1326194076025 = 122586^2 + 1151605^2 .

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 1341221403421 - 2²⁷ = 1341087185693 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1341221403421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1341221403427) 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, 514881 + ... + 1716841.

It is an arithmetic number, because the mean of its divisors is an integer number (168800538375).

Almost surely, 2^{1341221403421} is an apocalyptic number.

It is an amenable number.

1341221403421 is a deficient number, since it is larger than the sum of its proper divisors (9182903579).

1341221403421 is a wasteful number, since it uses less digits than its factorization.

1341221403421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209599.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 1341221403421 its reverse (1243041221431), we get a palindrome (2584262624852).

The spelling of 1341221403421 in words is "one trillion, three hundred forty-one billion, two hundred twenty-one million, four hundred three thousand, four hundred twenty-one".