211001231212212 has 48 divisors (see below), whose sum is σ = 587133860769792. Its totient is φ = 57664932753120.

The previous prime is 211001231212181. The next prime is 211001231212231. The reversal of 211001231212212 is 212212132100112.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54606941964 + ... + 54606945827.

It is an arithmetic number, because the mean of its divisors is an integer number (12231955432704).

Almost surely, 2^{211001231212212} is an apocalyptic number.

It is an amenable number.

211001231212212 is an abundant number, since it is smaller than the sum of its proper divisors (376132629557580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211001231212212 is a wasteful number, since it uses less digits than its factorization.

211001231212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109213887828 (or 109213887826 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 211001231212212 its reverse (212212132100112), we get a palindrome (423213363312324).

The spelling of 211001231212212 in words is "two hundred eleven trillion, one billion, two hundred thirty-one million, two hundred twelve thousand, two hundred twelve".