222261494 has 32 divisors (see below), whose sum is σ = 415974720. Its totient is φ = 86717952.

The previous prime is 222261433. The next prime is 222261499. The reversal of 222261494 is 494162222.

It is a super-2 number, since 2×222261494² = 98800343430224072, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 222261494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222261499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4922 + ... + 21650.

It is an arithmetic number, because the mean of its divisors is an integer number (12999210).

Almost surely, 2^222261494 is an apocalyptic number.

222261494 is a deficient number, since it is larger than the sum of its proper divisors (193713226).

222261494 is a wasteful number, since it uses less digits than its factorization.

222261494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16824.

The product of its digits is 13824, while the sum is 32.

The square root of 222261494 is about 14908.4370072788. The cubic root of 222261494 is about 605.7425429538.

The spelling of 222261494 in words is "two hundred twenty-two million, two hundred sixty-one thousand, four hundred ninety-four".