210011101111021 has 16 divisors (see below), whose sum is σ = 240302541377920. Its totient is φ = 179792253987840.

The previous prime is 210011101110991. The next prime is 210011101111073. The reversal of 210011101111021 is 120111101110012.

It is a cyclic number.

It is not a de Polignac number, because 210011101111021 - 2⁹ = 210011101110509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210011101110992 and 210011101111010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210011101114021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14063701 + ... + 24855781.

It is an arithmetic number, because the mean of its divisors is an integer number (15018908836120).

Almost surely, 2^{210011101111021} is an apocalyptic number.

It is an amenable number.

210011101111021 is a deficient number, since it is larger than the sum of its proper divisors (30291440266899).

210011101111021 is a wasteful number, since it uses less digits than its factorization.

210011101111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10795444.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 210011101111021 its reverse (120111101110012), we get a palindrome (330122202221033).

The spelling of 210011101111021 in words is "two hundred ten trillion, eleven billion, one hundred one million, one hundred eleven thousand, twenty-one".