7215222563401 has 2 divisors, whose sum is σ = 7215222563402. Its totient is φ = 7215222563400.

The previous prime is 7215222563359. The next prime is 7215222563431. The reversal of 7215222563401 is 1043652225127.

7215222563401 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5437664334400 + 1777558229001 = 2331880^2 + 1333251^2 .

It is a cyclic number.

It is not a de Polignac number, because 7215222563401 - 2²³ = 7215214174793 is a prime.

It is not a weakly prime, because it can be changed into another prime (7215222563431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3607611281700 + 3607611281701.

It is an arithmetic number, because the mean of its divisors is an integer number (3607611281701).

Almost surely, 2^{7215222563401} is an apocalyptic number.

It is an amenable number.

7215222563401 is a deficient number, since it is larger than the sum of its proper divisors (1).

7215222563401 is an equidigital number, since it uses as much as digits as its factorization.

7215222563401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 201600, while the sum is 40.

Adding to 7215222563401 its reverse (1043652225127), we get a palindrome (8258874788528).

The spelling of 7215222563401 in words is "seven trillion, two hundred fifteen billion, two hundred twenty-two million, five hundred sixty-three thousand, four hundred one".