211101211021012 has 12 divisors (see below), whose sum is σ = 397844590001236. Its totient is φ = 97431328163520.

The previous prime is 211101211021009. The next prime is 211101211021061. The reversal of 211101211021012 is 210120112101112.

It can be written as a sum of positive squares in 2 ways, for example, as 101368127694276 + 109733083326736 = 10068174^2 + 10475356^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2029819336689 + ... + 2029819336792.

Almost surely, 2^{211101211021012} is an apocalyptic number.

It is an amenable number.

211101211021012 is a deficient number, since it is larger than the sum of its proper divisors (186743378980224).

211101211021012 is a wasteful number, since it uses less digits than its factorization.

211101211021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4059638673498 (or 4059638673496 counting only the distinct ones).

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

Adding to 211101211021012 its reverse (210120112101112), we get a palindrome (421221323122124).

The spelling of 211101211021012 in words is "two hundred eleven trillion, one hundred one billion, two hundred eleven million, twenty-one thousand, twelve".