2123204212 has 6 divisors (see below), whose sum is σ = 3715607378. Its totient is φ = 1061602104.

The previous prime is 2123204207. The next prime is 2123204219. The reversal of 2123204212 is 2124023212.

It can be written as a sum of positive squares in only one way, i.e., 1345128976 + 778075236 = 36676^2 + 27894^2 .

It is a super-2 number, since 2×2123204212² = 9015992251709081888, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2123204212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123204219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265400523 + ... + 265400530.

Almost surely, 2^2123204212 is an apocalyptic number.

It is an amenable number.

2123204212 is a deficient number, since it is larger than the sum of its proper divisors (1592403166).

2123204212 is a wasteful number, since it uses less digits than its factorization.

2123204212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530801057 (or 530801055 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2123204212 is about 46078.2401139627. The cubic root of 2123204212 is about 1285.2785382355.

Adding to 2123204212 its reverse (2124023212), we get a palindrome (4247227424).

The spelling of 2123204212 in words is "two billion, one hundred twenty-three million, two hundred four thousand, two hundred twelve".