1472222370781 has 2 divisors, whose sum is σ = 1472222370782. Its totient is φ = 1472222370780.

The previous prime is 1472222370709. The next prime is 1472222370809. The reversal of 1472222370781 is 1870732222741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 994589338681 + 477633032100 = 997291^2 + 691110^2 .

It is an emirp because it is prime and its reverse (1870732222741) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1472222370781 is a prime.

It is a super-2 number, since 2×1472222370781² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1472222370881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 736111185390 + 736111185391.

It is an arithmetic number, because the mean of its divisors is an integer number (736111185391).

Almost surely, 2^{1472222370781} is an apocalyptic number.

It is an amenable number.

1472222370781 is a deficient number, since it is larger than the sum of its proper divisors (1).

1472222370781 is an equidigital number, since it uses as much as digits as its factorization.

1472222370781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 526848, while the sum is 46.

The spelling of 1472222370781 in words is "one trillion, four hundred seventy-two billion, two hundred twenty-two million, three hundred seventy thousand, seven hundred eighty-one".