212220001220212 has 12 divisors (see below), whose sum is σ = 371388149412196. Its totient is φ = 106109101388160.

The previous prime is 212220001220107. The next prime is 212220001220243. The reversal of 212220001220212 is 212022100022212.

It can be written as a sum of positive squares in 2 ways, for example, as 62647003380196 + 149572997840016 = 7914986^2 + 12230004^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 212220001220212.

It is a congruent number.

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, 224274339 + ... + 225218602.

Almost surely, 2^{212220001220212} is an apocalyptic number.

It is an amenable number.

212220001220212 is a deficient number, since it is larger than the sum of its proper divisors (159168148191984).

212220001220212 is a wasteful number, since it uses less digits than its factorization.

212220001220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449610978 (or 449610976 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 212220001220212 its reverse (212022100022212), we get a palindrome (424242101242424).

The spelling of 212220001220212 in words is "two hundred twelve trillion, two hundred twenty billion, one million, two hundred twenty thousand, two hundred twelve".