7212227142481 has 9 divisors (see below), whose sum is σ = 7230532504923. Its totient is φ = 7193968026840.

The previous prime is 7212227142451. The next prime is 7212227142563. The reversal of 7212227142481 is 1842417222127.

The square root of 7212227142481 is 2685559.

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

It can be written as a sum of positive squares in only one way, i.e., 34221670081 + 7178005472400 = 184991^2 + 2679180^2 .

It is not a de Polignac number, because 7212227142481 - 2³¹ = 7210079658833 is a prime.

It is a super-2 number, since 2×7212227142481² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7212227142431) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1130617150 + ... + 1130623528.

It is an arithmetic number, because the mean of its divisors is an integer number (803392500547).

Almost surely, 2^{7212227142481} is an apocalyptic number.

7212227142481 is the 2685559-th square number.

7212227142481 is the 1342780-th centered octagonal number.

It is an amenable number.

7212227142481 is a deficient number, since it is larger than the sum of its proper divisors (18305362442).

7212227142481 is an frugal number, since it uses more digits than its factorization.

7212227142481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13600 (or 6800 counting only the distinct ones).

The product of its digits is 200704, while the sum is 43.

The spelling of 7212227142481 in words is "seven trillion, two hundred twelve billion, two hundred twenty-seven million, one hundred forty-two thousand, four hundred eighty-one".