210021100010011 has 4 divisors (see below), whose sum is σ = 210023824767624. Its totient is φ = 210018375252400.

The previous prime is 210021100009969. The next prime is 210021100010039. The reversal of 210021100010011 is 110010001120012.

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

It is a cyclic number.

It is not a de Polignac number, because 210021100010011 - 2¹¹ = 210021100007963 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210021100010011.

It is not an unprimeable number, because it can be changed into a prime (210021100010081) 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, 1362263185 + ... + 1362417346.

It is an arithmetic number, because the mean of its divisors is an integer number (52505956191906).

Almost surely, 2^{210021100010011} is an apocalyptic number.

210021100010011 is a deficient number, since it is larger than the sum of its proper divisors (2724757613).

210021100010011 is an equidigital number, since it uses as much as digits as its factorization.

210021100010011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2724757612.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 210021100010011 its reverse (110010001120012), we get a palindrome (320031101130023).

The spelling of 210021100010011 in words is "two hundred ten trillion, twenty-one billion, one hundred million, ten thousand, eleven".