1550412231421 has 8 divisors (see below), whose sum is σ = 1640468904320. Its totient is φ = 1461201161472.

The previous prime is 1550412231409. The next prime is 1550412231469. The reversal of 1550412231421 is 1241322140551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1550412231421 - 2¹³ = 1550412223229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1550412231491) 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, 211396965 + ... + 211404298.

It is an arithmetic number, because the mean of its divisors is an integer number (205058613040).

Almost surely, 2^{1550412231421} is an apocalyptic number.

It is an amenable number.

1550412231421 is a deficient number, since it is larger than the sum of its proper divisors (90056672899).

1550412231421 is a wasteful number, since it uses less digits than its factorization.

1550412231421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422801475.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 1550412231421 its reverse (1241322140551), we get a palindrome (2791734371972).

The spelling of 1550412231421 in words is "one trillion, five hundred fifty billion, four hundred twelve million, two hundred thirty-one thousand, four hundred twenty-one".