211121210101012 has 6 divisors (see below), whose sum is σ = 369462117676778. Its totient is φ = 105560605050504.

The previous prime is 211121210100971. The next prime is 211121210101069. The reversal of 211121210101012 is 210101012121112.

It can be written as a sum of positive squares in only one way, i.e., 211097245822596 + 23964278416 = 14529186^2 + 154804^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26390151262623 + ... + 26390151262630.

Almost surely, 2^{211121210101012} is an apocalyptic number.

It is an amenable number.

211121210101012 is a deficient number, since it is larger than the sum of its proper divisors (158340907575766).

211121210101012 is a wasteful number, since it uses less digits than its factorization.

211121210101012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52780302525257 (or 52780302525255 counting only the distinct ones).

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

Adding to 211121210101012 its reverse (210101012121112), we get a palindrome (421222222222124).

The spelling of 211121210101012 in words is "two hundred eleven trillion, one hundred twenty-one billion, two hundred ten million, one hundred one thousand, twelve".