1000123220212 has 6 divisors (see below), whose sum is σ = 1750215635378. Its totient is φ = 500061610104.

The previous prime is 1000123220179. The next prime is 1000123220227. The reversal of 1000123220212 is 2120223210001.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 894261487716 + 105861732496 = 945654^2 + 325364^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125015402523 + ... + 125015402530.

Almost surely, 2^{1000123220212} is an apocalyptic number.

It is an amenable number.

1000123220212 is a deficient number, since it is larger than the sum of its proper divisors (750092415166).

1000123220212 is a wasteful number, since it uses less digits than its factorization.

1000123220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250030805057 (or 250030805055 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1000123220212 its reverse (2120223210001), we get a palindrome (3120346430213).

The spelling of 1000123220212 in words is "one trillion, one hundred twenty-three million, two hundred twenty thousand, two hundred twelve".