211202212220212 has 6 divisors (see below), whose sum is σ = 369603871385378. Its totient is φ = 105601106110104.

The previous prime is 211202212220203. The next prime is 211202212220249. The reversal of 211202212220212 is 212022212202112.

It can be written as a sum of positive squares in only one way, i.e., 211137348280356 + 64863939856 = 14530566^2 + 254684^2 .

It is a super-2 number, since 2×211202212220212² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26400276527523 + ... + 26400276527530.

Almost surely, 2^{211202212220212} is an apocalyptic number.

It is an amenable number.

211202212220212 is a deficient number, since it is larger than the sum of its proper divisors (158401659165166).

211202212220212 is a wasteful number, since it uses less digits than its factorization.

211202212220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52800553055057 (or 52800553055055 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 211202212220212 its reverse (212022212202112), we get a palindrome (423224424422324).

The spelling of 211202212220212 in words is "two hundred eleven trillion, two hundred two billion, two hundred twelve million, two hundred twenty thousand, two hundred twelve".