222001142261 has 2 divisors, whose sum is σ = 222001142262. Its totient is φ = 222001142260.

The previous prime is 222001142183. The next prime is 222001142351. The reversal of 222001142261 is 162241100222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209315400100 + 12685742161 = 457510^2 + 112631^2 .

It is a cyclic number.

It is not a de Polignac number, because 222001142261 - 2²² = 221996947957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222001141261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111000571130 + 111000571131.

It is an arithmetic number, because the mean of its divisors is an integer number (111000571131).

Almost surely, 2^222001142261 is an apocalyptic number.

It is an amenable number.

222001142261 is a deficient number, since it is larger than the sum of its proper divisors (1).

222001142261 is an equidigital number, since it uses as much as digits as its factorization.

222001142261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 222001142261 its reverse (162241100222), we get a palindrome (384242242483).

The spelling of 222001142261 in words is "two hundred twenty-two billion, one million, one hundred forty-two thousand, two hundred sixty-one".