7220438283481 has 2 divisors, whose sum is σ = 7220438283482. Its totient is φ = 7220438283480.

The previous prime is 7220438283439. The next prime is 7220438283533. The reversal of 7220438283481 is 1843828340227.

7220438283481 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (7220438283533) can be obtained adding 7220438283481 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6042334269456 + 1178104014025 = 2458116^2 + 1085405^2 .

It is an emirp because it is prime and its reverse (1843828340227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7220438283481 - 2¹⁹ = 7220437759193 is a prime.

It is a super-2 number, since 2×7220438283481² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7220438283181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3610219141740 + 3610219141741.

It is an arithmetic number, because the mean of its divisors is an integer number (3610219141741).

Almost surely, 2^{7220438283481} is an apocalyptic number.

It is an amenable number.

7220438283481 is a deficient number, since it is larger than the sum of its proper divisors (1).

7220438283481 is an equidigital number, since it uses as much as digits as its factorization.

7220438283481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4128768, while the sum is 52.

The spelling of 7220438283481 in words is "seven trillion, two hundred twenty billion, four hundred thirty-eight million, two hundred eighty-three thousand, four hundred eighty-one".