210100012201111 has 4 divisors (see below), whose sum is σ = 210109118895424. Its totient is φ = 210090905506800.

The previous prime is 210100012201081. The next prime is 210100012201139. The reversal of 210100012201111 is 111102210001012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210100012201111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210100012201091 and 210100012201100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210100012201141) 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, 4553312550 + ... + 4553358691.

It is an arithmetic number, because the mean of its divisors is an integer number (52527279723856).

Almost surely, 2^{210100012201111} is an apocalyptic number.

210100012201111 is a deficient number, since it is larger than the sum of its proper divisors (9106694313).

210100012201111 is an equidigital number, since it uses as much as digits as its factorization.

210100012201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9106694312.

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

Adding to 210100012201111 its reverse (111102210001012), we get a palindrome (321202222202123).

The spelling of 210100012201111 in words is "two hundred ten trillion, one hundred billion, twelve million, two hundred one thousand, one hundred eleven".