21210110201011 has 8 divisors (see below), whose sum is σ = 21214798083360. Its totient is φ = 21205422756672.

The previous prime is 21210110200997. The next prime is 21210110201099. The reversal of 21210110201011 is 11010201101212.

It is a happy number.

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 21210110201011 - 2³³ = 21201520266419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21210110200982 and 21210110201000.

It is not an unprimeable number, because it can be changed into a prime (21210110201311) 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, 108342231 + ... + 108537823.

It is an arithmetic number, because the mean of its divisors is an integer number (2651849760420).

Almost surely, 2^{21210110201011} is an apocalyptic number.

21210110201011 is a deficient number, since it is larger than the sum of its proper divisors (4687882349).

21210110201011 is a wasteful number, since it uses less digits than its factorization.

21210110201011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219005.

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

Adding to 21210110201011 its reverse (11010201101212), we get a palindrome (32220311302223).

The spelling of 21210110201011 in words is "twenty-one trillion, two hundred ten billion, one hundred ten million, two hundred one thousand, eleven".