211001001221212 has 18 divisors (see below), whose sum is σ = 389708912923008. Its totient is φ = 99947842683048.

The previous prime is 211001001221209. The next prime is 211001001221279. The reversal of 211001001221212 is 212122100100112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73061287068 + ... + 73061289955.

Almost surely, 2^{211001001221212} is an apocalyptic number.

It is an amenable number.

211001001221212 is a deficient number, since it is larger than the sum of its proper divisors (178707911701796).

211001001221212 is a wasteful number, since it uses less digits than its factorization.

211001001221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146122577065 (or 146122577044 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211001001221212 its reverse (212122100100112), we get a palindrome (423123101321324).

The spelling of 211001001221212 in words is "two hundred eleven trillion, one billion, one million, two hundred twenty-one thousand, two hundred twelve".