1341221051 has 4 divisors (see below), whose sum is σ = 1345960632. Its totient is φ = 1336481472.

The previous prime is 1341221023. The next prime is 1341221053. The reversal of 1341221051 is 1501221431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1341221051 - 2¹⁸ = 1340958907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1341221053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2369366 + ... + 2369931.

It is an arithmetic number, because the mean of its divisors is an integer number (336490158).

Almost surely, 2^1341221051 is an apocalyptic number.

1341221051 is a deficient number, since it is larger than the sum of its proper divisors (4739581).

1341221051 is an equidigital number, since it uses as much as digits as its factorization.

1341221051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4739580.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1341221051 is about 36622.6849234187. The cubic root of 1341221051 is about 1102.8085396126.

Adding to 1341221051 its reverse (1501221431), we get a palindrome (2842442482).

The spelling of 1341221051 in words is "one billion, three hundred forty-one million, two hundred twenty-one thousand, fifty-one".