212101011011121 has 16 divisors (see below), whose sum is σ = 287756434392000. Its totient is φ = 138925828205568.

The previous prime is 212101011011119. The next prime is 212101011011147. The reversal of 212101011011121 is 121110110101212.

It is not a de Polignac number, because 212101011011121 - 2¹ = 212101011011119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212101011011121.

It is not an unprimeable number, because it can be changed into a prime (212101011011101) 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, 336857896 + ... + 337486953.

It is an arithmetic number, because the mean of its divisors is an integer number (17984777149500).

Almost surely, 2^{212101011011121} is an apocalyptic number.

It is an amenable number.

212101011011121 is a deficient number, since it is larger than the sum of its proper divisors (75655423380879).

212101011011121 is a wasteful number, since it uses less digits than its factorization.

212101011011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674346688.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 212101011011121 its reverse (121110110101212), we get a palindrome (333211121112333).

Subtracting from 212101011011121 its reverse (121110110101212), we obtain a palindrome (90990900909909).

The spelling of 212101011011121 in words is "two hundred twelve trillion, one hundred one billion, eleven million, eleven thousand, one hundred twenty-one".