212101121111212 has 12 divisors (see below), whose sum is σ = 371420676309816. Its totient is φ = 105980927879840.

The previous prime is 212101121111189. The next prime is 212101121111233. The reversal of 212101121111212 is 212111121101212.

It is a self number, because there is not a number n which added to its sum of digits gives 212101121111212.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17408162089 + ... + 17408174272.

It is an arithmetic number, because the mean of its divisors is an integer number (30951723025818).

Almost surely, 2^{212101121111212} is an apocalyptic number.

It is an amenable number.

212101121111212 is a deficient number, since it is larger than the sum of its proper divisors (159319555198604).

212101121111212 is a wasteful number, since it uses less digits than its factorization.

212101121111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34816337888 (or 34816337886 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 212101121111212 its reverse (212111121101212), we get a palindrome (424212242212424).

The spelling of 212101121111212 in words is "two hundred twelve trillion, one hundred one billion, one hundred twenty-one million, one hundred eleven thousand, two hundred twelve".