222954381 has 12 divisors (see below), whose sum is σ = 346818108. Its totient is φ = 137202624.

The previous prime is 222954367. The next prime is 222954383. The reversal of 222954381 is 183459222.

It is a happy number.

222954381 is a `hidden beast` number, since 2 + 229 + 54 + 381 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 65853225 + 157101156 = 8115^2 + 12534^2 .

It is not a de Polignac number, because 222954381 - 2¹³ = 222946189 is a prime.

It is a super-2 number, since 2×222954381² = 99417312014186322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222954383) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 952680 + ... + 952913.

It is an arithmetic number, because the mean of its divisors is an integer number (28901509).

Almost surely, 2^222954381 is an apocalyptic number.

It is an amenable number.

222954381 is a deficient number, since it is larger than the sum of its proper divisors (123863727).

222954381 is a wasteful number, since it uses less digits than its factorization.

222954381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1905612 (or 1905609 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 222954381 is about 14931.6570078475. The cubic root of 222954381 is about 606.3713454484.

The spelling of 222954381 in words is "two hundred twenty-two million, nine hundred fifty-four thousand, three hundred eighty-one".