1642221513241 has 4 divisors (see below), whose sum is σ = 1642234670800. Its totient is φ = 1642208355684.

The previous prime is 1642221513227. The next prime is 1642221513277. The reversal of 1642221513241 is 1423151222461.

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 1642221513241 - 2¹⁷ = 1642221382169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1642221513197 and 1642221513206.

It is not an unprimeable number, because it can be changed into a prime (1642221513641) 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, 6389751 + ... + 6641788.

It is an arithmetic number, because the mean of its divisors is an integer number (410558667700).

Almost surely, 2^{1642221513241} is an apocalyptic number.

It is an amenable number.

1642221513241 is a deficient number, since it is larger than the sum of its proper divisors (13157559).

1642221513241 is a wasteful number, since it uses less digits than its factorization.

1642221513241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13157558.

The product of its digits is 23040, while the sum is 34.

The spelling of 1642221513241 in words is "one trillion, six hundred forty-two billion, two hundred twenty-one million, five hundred thirteen thousand, two hundred forty-one".