20212012201111 has 4 divisors (see below), whose sum is σ = 21400954095312. Its totient is φ = 19023070306912.

The previous prime is 20212012201097. The next prime is 20212012201123. The reversal of 20212012201111 is 11110221021202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20212012201111 - 2¹⁵ = 20212012168343 is a prime.

It is a super-2 number, since 2×20212012201111² (a number of 27 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 (20212012201141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 594470947075 + ... + 594470947108.

It is an arithmetic number, because the mean of its divisors is an integer number (5350238523828).

Almost surely, 2^{20212012201111} is an apocalyptic number.

20212012201111 is a deficient number, since it is larger than the sum of its proper divisors (1188941894201).

20212012201111 is a wasteful number, since it uses less digits than its factorization.

20212012201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188941894200.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20212012201111 its reverse (11110221021202), we get a palindrome (31322233222313).

The spelling of 20212012201111 in words is "twenty trillion, two hundred twelve billion, twelve million, two hundred one thousand, one hundred eleven".