222015142541 has 2 divisors, whose sum is σ = 222015142542. Its totient is φ = 222015142540.

The previous prime is 222015142529. The next prime is 222015142571. The reversal of 222015142541 is 145241510222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 167263822441 + 54751320100 = 408979^2 + 233990^2 .

It is a cyclic number.

It is not a de Polignac number, because 222015142541 - 2¹⁸ = 222014880397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222015142571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111007571270 + 111007571271.

It is an arithmetic number, because the mean of its divisors is an integer number (111007571271).

Almost surely, 2^222015142541 is an apocalyptic number.

It is an amenable number.

222015142541 is a deficient number, since it is larger than the sum of its proper divisors (1).

222015142541 is an equidigital number, since it uses as much as digits as its factorization.

222015142541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 222015142541 its reverse (145241510222), we get a palindrome (367256652763).

The spelling of 222015142541 in words is "two hundred twenty-two billion, fifteen million, one hundred forty-two thousand, five hundred forty-one".