210021100220011 has 8 divisors (see below), whose sum is σ = 222375424654080. Its totient is φ = 197666791571328.

The previous prime is 210021100220003. The next prime is 210021100220027. The reversal of 210021100220011 is 110022001120012.

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 210021100220011 - 2³ = 210021100220003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210021100219973 and 210021100220000.

It is not an unprimeable number, because it can be changed into a prime (210021100220081) 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, 33714870 + ... + 39455476.

It is an arithmetic number, because the mean of its divisors is an integer number (27796928081760).

Almost surely, 2^{210021100220011} is an apocalyptic number.

210021100220011 is a deficient number, since it is larger than the sum of its proper divisors (12354324434069).

210021100220011 is a wasteful number, since it uses less digits than its factorization.

210021100220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7892693.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 210021100220011 its reverse (110022001120012), we get a palindrome (320043101340023).

Subtracting from 210021100220011 its reverse (110022001120012), we obtain a palindrome (99999099099999).

The spelling of 210021100220011 in words is "two hundred ten trillion, twenty-one billion, one hundred million, two hundred twenty thousand, eleven".