212021122120011 has 40 divisors (see below), whose sum is σ = 335084886092880. Its totient is φ = 133228340505792.

The previous prime is 212021122119977. The next prime is 212021122120187. The reversal of 212021122120011 is 110021221120212.

212021122120011 is a `hidden beast` number, since 2 + 1 + 20 + 211 + 221 + 200 + 11 = 666.

It is not a de Polignac number, because 212021122120011 - 2¹⁴ = 212021122103627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212021122120811) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 349355476 + ... + 349961841.

It is an arithmetic number, because the mean of its divisors is an integer number (8377122152322).

Almost surely, 2^{212021122120011} is an apocalyptic number.

212021122120011 is a deficient number, since it is larger than the sum of its proper divisors (123063763972869).

212021122120011 is a wasteful number, since it uses less digits than its factorization.

212021122120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699317545 (or 699317536 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 212021122120011 its reverse (110021221120212), we get a palindrome (322042343240223).

The spelling of 212021122120011 in words is "two hundred twelve trillion, twenty-one billion, one hundred twenty-two million, one hundred twenty thousand, eleven".