2381222420641 has 9 divisors (see below), whose sum is σ = 2396173879281. Its totient is φ = 2366363708532.

The previous prime is 2381222420627. The next prime is 2381222420651. The reversal of 2381222420641 is 1460242221832.

The square root of 2381222420641 is 1543121.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 2381222420641 - 2⁵ = 2381222420609 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 2381222420641.

It is not an unprimeable number, because it can be changed into a prime (2381222420651) 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 8 ways as a sum of consecutive naturals, for example, 251523990 + ... + 251533456.

Almost surely, 2^{2381222420641} is an apocalyptic number.

2381222420641 is the 1543121-st square number.

2381222420641 is the 771561-st centered octagonal number.

It is an amenable number.

2381222420641 is a deficient number, since it is larger than the sum of its proper divisors (14951458640).

2381222420641 is an frugal number, since it uses more digits than its factorization.

2381222420641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19260 (or 9630 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 37.

The spelling of 2381222420641 in words is "two trillion, three hundred eighty-one billion, two hundred twenty-two million, four hundred twenty thousand, six hundred forty-one".