1341221321 has 4 divisors (see below), whose sum is σ = 1463150544. Its totient is φ = 1219292100.

The previous prime is 1341221317. The next prime is 1341221383. The reversal of 1341221321 is 1231221431.

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 1341221321 - 2² = 1341221317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1341221293 and 1341221302.

It is not an unprimeable number, because it can be changed into a prime (1341221221) 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, 60964595 + ... + 60964616.

It is an arithmetic number, because the mean of its divisors is an integer number (365787636).

Almost surely, 2^1341221321 is an apocalyptic number.

1341221321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1341221321 is a deficient number, since it is larger than the sum of its proper divisors (121929223).

1341221321 is a wasteful number, since it uses less digits than its factorization.

1341221321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121929222.

The product of its digits is 288, while the sum is 20.

The square root of 1341221321 is about 36622.6886096584. The cubic root of 1341221321 is about 1102.8086136144.

Adding to 1341221321 its reverse (1231221431), we get a palindrome (2572442752).

The spelling of 1341221321 in words is "one billion, three hundred forty-one million, two hundred twenty-one thousand, three hundred twenty-one".