222012100222002 has 24 divisors (see below), whose sum is σ = 481035950735340. Its totient is φ = 74002535932320.

The previous prime is 222012100221971. The next prime is 222012100222007. The reversal of 222012100222002 is 200222001210222.

It can be written as a sum of positive squares in 2 ways, for example, as 199108496157561 + 22903604064441 = 14110581^2 + 4785771^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (222012100222007) 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, 123875149 + ... + 125654592.

Almost surely, 2^{222012100222002} is an apocalyptic number.

222012100222002 is an abundant number, since it is smaller than the sum of its proper divisors (259023850513338).

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

222012100222002 is a wasteful number, since it uses less digits than its factorization.

222012100222002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249579178 (or 249579175 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 222012100222002 its reverse (200222001210222), we get a palindrome (422234101432224).

The spelling of 222012100222002 in words is "two hundred twenty-two trillion, twelve billion, one hundred million, two hundred twenty-two thousand, two".