2100020212 has 6 divisors (see below), whose sum is σ = 3675035378. Its totient is φ = 1050010104.

The previous prime is 2100020189. The next prime is 2100020227. The reversal of 2100020212 is 2120200012.

It can be written as a sum of positive squares in only one way, i.e., 1829615076 + 270405136 = 42774^2 + 16444^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262502523 + ... + 262502530.

Almost surely, 2^2100020212 is an apocalyptic number.

It is an amenable number.

2100020212 is a deficient number, since it is larger than the sum of its proper divisors (1575015166).

2100020212 is a wasteful number, since it uses less digits than its factorization.

2100020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525005057 (or 525005055 counting only the distinct ones).

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

The square root of 2100020212 is about 45825.9774800276. The cubic root of 2100020212 is about 1280.5832733975.

Adding to 2100020212 its reverse (2120200012), we get a palindrome (4220220224).

The spelling of 2100020212 in words is "two billion, one hundred million, twenty thousand, two hundred twelve".