222100012 has 12 divisors (see below), whose sum is σ = 388947496. Its totient is φ = 110972160.

The previous prime is 222099991. The next prime is 222100037. The reversal of 222100012 is 210001222.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12789 + ... + 24652.

Almost surely, 2^222100012 is an apocalyptic number.

It is an amenable number.

222100012 is a deficient number, since it is larger than the sum of its proper divisors (166847484).

222100012 is a wasteful number, since it uses less digits than its factorization.

222100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38928 (or 38926 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 222100012 is about 14903.0202308123. The cubic root of 222100012 is about 605.5958085609.

Adding to 222100012 its reverse (210001222), we get a palindrome (432101234).

It can be divided in two parts, 22 and 2100012, that multiplied together give a palindrome (46200264).

The spelling of 222100012 in words is "two hundred twenty-two million, one hundred thousand, twelve".