212002020122111 has 4 divisors (see below), whose sum is σ = 212044395106152. Its totient is φ = 211959645138072.

The previous prime is 212002020122107. The next prime is 212002020122129. The reversal of 212002020122111 is 111221020200212.

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 212002020122111 - 2² = 212002020122107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212002020122111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212002020122141) 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, 21187484516 + ... + 21187494521.

It is an arithmetic number, because the mean of its divisors is an integer number (53011098776538).

Almost surely, 2^{212002020122111} is an apocalyptic number.

212002020122111 is a deficient number, since it is larger than the sum of its proper divisors (42374984041).

212002020122111 is an equidigital number, since it uses as much as digits as its factorization.

212002020122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42374984040.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212002020122111 its reverse (111221020200212), we get a palindrome (323223040322323).

The spelling of 212002020122111 in words is "two hundred twelve trillion, two billion, twenty million, one hundred twenty-two thousand, one hundred eleven".