212021120110111 has 16 divisors (see below), whose sum is σ = 228625198986240. Its totient is φ = 195459236390880.

The previous prime is 212021120109979. The next prime is 212021120110127. The reversal of 212021120110111 is 111011021120212.

It is a cyclic number.

It is not a de Polignac number, because 212021120110111 - 2¹⁵ = 212021120077343 is a prime.

It is a super-2 number, since 2×212021120110111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021120110141) 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, 57258876 + ... + 60849166.

It is an arithmetic number, because the mean of its divisors is an integer number (14289074936640).

Almost surely, 2^{212021120110111} is an apocalyptic number.

212021120110111 is a deficient number, since it is larger than the sum of its proper divisors (16604078876129).

212021120110111 is a wasteful number, since it uses less digits than its factorization.

212021120110111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3596166.

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

Adding to 212021120110111 its reverse (111011021120212), we get a palindrome (323032141230323).

The spelling of 212021120110111 in words is "two hundred twelve trillion, twenty-one billion, one hundred twenty million, one hundred ten thousand, one hundred eleven".