212102021120212 has 6 divisors (see below), whose sum is σ = 371178536960378. Its totient is φ = 106051010560104.

The previous prime is 212102021120201. The next prime is 212102021120261. The reversal of 212102021120212 is 212021120201212.

It can be written as a sum of positive squares in only one way, i.e., 146322070405956 + 65779950714256 = 12096366^2 + 8110484^2 .

It is a super-2 number, since 2×212102021120212² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212102021120212.

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, 26512752640023 + ... + 26512752640030.

Almost surely, 2^{212102021120212} is an apocalyptic number.

It is an amenable number.

212102021120212 is a deficient number, since it is larger than the sum of its proper divisors (159076515840166).

212102021120212 is a wasteful number, since it uses less digits than its factorization.

212102021120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53025505280057 (or 53025505280055 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 212102021120212 its reverse (212021120201212), we get a palindrome (424123141321424).

The spelling of 212102021120212 in words is "two hundred twelve trillion, one hundred two billion, twenty-one million, one hundred twenty thousand, two hundred twelve".