210100100001111 has 12 divisors (see below), whose sum is σ = 313267532618560. Its totient is φ = 135548451613440.

The previous prime is 210100100001013. The next prime is 210100100001137. The reversal of 210100100001111 is 111100001001012.

It is not a de Polignac number, because 210100100001111 - 2¹⁷ = 210100099870039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210100100001093 and 210100100001102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210100100001611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 376523476426 + ... + 376523476983.

Almost surely, 2^{210100100001111} is an apocalyptic number.

210100100001111 is a deficient number, since it is larger than the sum of its proper divisors (103167432617449).

210100100001111 is a wasteful number, since it uses less digits than its factorization.

210100100001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753046953446 (or 753046953443 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 210100100001111 its reverse (111100001001012), we get a palindrome (321200101002123).

Subtracting from 210100100001111 its reverse (111100001001012), we obtain a palindrome (99000099000099).

The spelling of 210100100001111 in words is "two hundred ten trillion, one hundred billion, one hundred million, one thousand, one hundred eleven".