202120212110111 has 8 divisors (see below), whose sum is σ = 205137492510720. Its totient is φ = 199102948204248.

The previous prime is 202120212110081. The next prime is 202120212110119. The reversal of 202120212110111 is 111011212021202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 202120212110111 - 2²² = 202120207915807 is a prime.

It is a super-2 number, since 2×202120212110111² (a number of 29 digits) contains 22 as substring.

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 202120212110111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202120212110119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21771170 + ... + 29634848.

It is an arithmetic number, because the mean of its divisors is an integer number (25642186563840).

Almost surely, 2^{202120212110111} is an apocalyptic number.

202120212110111 is a deficient number, since it is larger than the sum of its proper divisors (3017280400609).

202120212110111 is an equidigital number, since it uses as much as digits as its factorization.

202120212110111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8247373.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 202120212110111 its reverse (111011212021202), we get a palindrome (313131424131313).

The spelling of 202120212110111 in words is "two hundred two trillion, one hundred twenty billion, two hundred twelve million, one hundred ten thousand, one hundred eleven".