212122012312011 has 16 divisors (see below), whose sum is σ = 283153842318368. Its totient is φ = 141252430867200.

The previous prime is 212122012311977. The next prime is 212122012312019. The reversal of 212122012312011 is 110213210221212.

It is not a de Polignac number, because 212122012312011 - 2⁶ = 212122012311947 is a prime.

It is a super-2 number, since 2×212122012312011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212122012312019) 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, 716381151 + ... + 716677191.

It is an arithmetic number, because the mean of its divisors is an integer number (17697115144898).

Almost surely, 2^{212122012312011} is an apocalyptic number.

212122012312011 is a deficient number, since it is larger than the sum of its proper divisors (71031830006357).

212122012312011 is a wasteful number, since it uses less digits than its factorization.

212122012312011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569262.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 212122012312011 its reverse (110213210221212), we get a palindrome (322335222533223).

The spelling of 212122012312011 in words is "two hundred twelve trillion, one hundred twenty-two billion, twelve million, three hundred twelve thousand, eleven".