1550771221341 has 4 divisors (see below), whose sum is σ = 2067694961792. Its totient is φ = 1033847480892.

The previous prime is 1550771221331. The next prime is 1550771221361. The reversal of 1550771221341 is 1431221770551.

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 not a de Polignac number, because 1550771221341 - 2¹⁵ = 1550771188573 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 1550771221341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1550771221331) 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, 258461870221 + ... + 258461870226.

It is an arithmetic number, because the mean of its divisors is an integer number (516923740448).

Almost surely, 2^{1550771221341} is an apocalyptic number.

It is an amenable number.

1550771221341 is a deficient number, since it is larger than the sum of its proper divisors (516923740451).

1550771221341 is an equidigital number, since it uses as much as digits as its factorization.

1550771221341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516923740450.

The product of its (nonzero) digits is 58800, while the sum is 39.

Adding to 1550771221341 its reverse (1431221770551), we get a palindrome (2981992991892).

The spelling of 1550771221341 in words is "one trillion, five hundred fifty billion, seven hundred seventy-one million, two hundred twenty-one thousand, three hundred forty-one".