210021110002111 has 8 divisors (see below), whose sum is σ = 210509289555840. Its totient is φ = 209532974865432.

The previous prime is 210021110002097. The next prime is 210021110002141. The reversal of 210021110002111 is 111200011120012.

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 not a de Polignac number, because 210021110002111 - 2²³ = 210021101613503 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210021110002091 and 210021110002100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210021110002141) 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, 1627105 + ... + 20559418.

It is an arithmetic number, because the mean of its divisors is an integer number (26313661194480).

Almost surely, 2^{210021110002111} is an apocalyptic number.

210021110002111 is a deficient number, since it is larger than the sum of its proper divisors (488179553729).

210021110002111 is a wasteful number, since it uses less digits than its factorization.

210021110002111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22208525.

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

Adding to 210021110002111 its reverse (111200011120012), we get a palindrome (321221121122123).

The spelling of 210021110002111 in words is "two hundred ten trillion, twenty-one billion, one hundred ten million, two thousand, one hundred eleven".