222064100261 has 32 divisors (see below), whose sum is σ = 239597222400. Its totient is φ = 205073536000.

The previous prime is 222064100191. The next prime is 222064100267. The reversal of 222064100261 is 162001460222.

It is a cyclic number.

It is not a de Polignac number, because 222064100261 - 2¹⁴ = 222064083877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222064100261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222064100267) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116813411 + ... + 116815311.

It is an arithmetic number, because the mean of its divisors is an integer number (7487413200).

Almost surely, 2^222064100261 is an apocalyptic number.

It is an amenable number.

222064100261 is a deficient number, since it is larger than the sum of its proper divisors (17533122139).

222064100261 is a wasteful number, since it uses less digits than its factorization.

222064100261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2605.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 222064100261 its reverse (162001460222), we get a palindrome (384065560483).

The spelling of 222064100261 in words is "two hundred twenty-two billion, sixty-four million, one hundred thousand, two hundred sixty-one".