212120102011011 has 16 divisors (see below), whose sum is σ = 283047724905600. Its totient is φ = 141302943695808.

The previous prime is 212120102010977. The next prime is 212120102011049. The reversal of 212120102011011 is 110110201021212.

It is a happy number.

It is not a de Polignac number, because 212120102011011 - 2¹⁹ = 212120101486723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212120102019011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265519455 + ... + 266317143.

It is an arithmetic number, because the mean of its divisors is an integer number (17690482806600).

Almost surely, 2^{212120102011011} is an apocalyptic number.

212120102011011 is a deficient number, since it is larger than the sum of its proper divisors (70927622894589).

212120102011011 is a wasteful number, since it uses less digits than its factorization.

212120102011011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866818.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 212120102011011 its reverse (110110201021212), we get a palindrome (322230303032223).

The spelling of 212120102011011 in words is "two hundred twelve trillion, one hundred twenty billion, one hundred two million, eleven thousand, eleven".