210111222012212 has 6 divisors (see below), whose sum is σ = 367694638521378. Its totient is φ = 105055611006104.

The previous prime is 210111222012203. The next prime is 210111222012217. The reversal of 210111222012212 is 212210222111012.

It can be written as a sum of positive squares in only one way, i.e., 209749352391076 + 361869621136 = 14482726^2 + 601556^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210111222012217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26263902751523 + ... + 26263902751530.

It is an arithmetic number, because the mean of its divisors is an integer number (61282439753563).

Almost surely, 2^{210111222012212} is an apocalyptic number.

It is an amenable number.

210111222012212 is a deficient number, since it is larger than the sum of its proper divisors (157583416509166).

210111222012212 is a wasteful number, since it uses less digits than its factorization.

210111222012212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52527805503057 (or 52527805503055 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 210111222012212 its reverse (212210222111012), we get a palindrome (422321444123224).

The spelling of 210111222012212 in words is "two hundred ten trillion, one hundred eleven billion, two hundred twenty-two million, twelve thousand, two hundred twelve".