222106161204 has 36 divisors (see below), whose sum is σ = 575128559460. Its totient is φ = 72229645440.

The previous prime is 222106161181. The next prime is 222106161217. The reversal of 222106161204 is 402161601222.

222106161204 is a `hidden beast` number, since 2 + 2 + 21 + 0 + 616 + 1 + 20 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 99187203600 + 122918957604 = 314940^2 + 350598^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×222106161204² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75237739 + ... + 75240690.

Almost surely, 2^222106161204 is an apocalyptic number.

It is an amenable number.

222106161204 is an abundant number, since it is smaller than the sum of its proper divisors (353022398256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222106161204 is a wasteful number, since it uses less digits than its factorization.

222106161204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150478480 (or 150478475 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 222106161204 its reverse (402161601222), we get a palindrome (624267762426).

The spelling of 222106161204 in words is "two hundred twenty-two billion, one hundred six million, one hundred sixty-one thousand, two hundred four".