211201031222212 has 6 divisors (see below), whose sum is σ = 369601804638878. Its totient is φ = 105600515611104.

The previous prime is 211201031222119. The next prime is 211201031222213. The reversal of 211201031222212 is 212222130102112.

It can be written as a sum of positive squares in only one way, i.e., 209177906184256 + 2023125037956 = 14462984^2 + 1422366^2 .

It is not an unprimeable number, because it can be changed into a prime (211201031222213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26400128902773 + ... + 26400128902780.

Almost surely, 2^{211201031222212} is an apocalyptic number.

It is an amenable number.

211201031222212 is a deficient number, since it is larger than the sum of its proper divisors (158400773416666).

211201031222212 is a wasteful number, since it uses less digits than its factorization.

211201031222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52800257805557 (or 52800257805555 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 211201031222212 its reverse (212222130102112), we get a palindrome (423423161324324).

The spelling of 211201031222212 in words is "two hundred eleven trillion, two hundred one billion, thirty-one million, two hundred twenty-two thousand, two hundred twelve".