222151026241 has 9 divisors (see below), whose sum is σ = 226447104009. Its totient is φ = 217934988336.

The previous prime is 222151026221. The next prime is 222151026311. The reversal of 222151026241 is 142620151222.

It is a happy number.

The square root of 222151026241 is 471329.

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

It can be written as a sum of positive squares in 4 ways, for example, as 7077688641 + 215073337600 = 84129^2 + 463760^2 .

It is not a de Polignac number, because 222151026241 - 2⁹ = 222151025729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222151026221) 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, 24975991 + ... + 24984883.

Almost surely, 2^222151026241 is an apocalyptic number.

222151026241 is the 471329-th square number.

222151026241 is the 235665-th centered octagonal number.

It is an amenable number.

222151026241 is a deficient number, since it is larger than the sum of its proper divisors (4296077768).

222151026241 is an frugal number, since it uses more digits than its factorization.

222151026241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17892 (or 8946 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 222151026241 its reverse (142620151222), we get a palindrome (364771177463).

The spelling of 222151026241 in words is "two hundred twenty-two billion, one hundred fifty-one million, twenty-six thousand, two hundred forty-one".