210120210001111 has 8 divisors (see below), whose sum is σ = 210429548998848. Its totient is φ = 209810949600000.

The previous prime is 210120210001087. The next prime is 210120210001159. The reversal of 210120210001111 is 111100012021012.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210120210001111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210120210001091 and 210120210001100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210120210001211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14297350 + ... + 24993091.

It is an arithmetic number, because the mean of its divisors is an integer number (26303693624856).

Almost surely, 2^{210120210001111} is an apocalyptic number.

210120210001111 is a deficient number, since it is larger than the sum of its proper divisors (309338997737).

210120210001111 is an equidigital number, since it uses as much as digits as its factorization.

210120210001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39298313.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 210120210001111 its reverse (111100012021012), we get a palindrome (321220222022123).

The spelling of 210120210001111 in words is "two hundred ten trillion, one hundred twenty billion, two hundred ten million, one thousand, one hundred eleven".