21002210113211 has 8 divisors (see below), whose sum is σ = 21054925674000. Its totient is φ = 20949496249600.

The previous prime is 21002210113187. The next prime is 21002210113279. The reversal of 21002210113211 is 11231101220012.

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 21002210113211 - 2¹⁴ = 21002210096827 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 21002210113211.

It is not an unprimeable number, because it can be changed into a prime (21002210113411) 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, 26496080 + ... + 27277218.

It is an arithmetic number, because the mean of its divisors is an integer number (2631865709250).

Almost surely, 2^{21002210113211} is an apocalyptic number.

21002210113211 is a deficient number, since it is larger than the sum of its proper divisors (52715560789).

21002210113211 is an equidigital number, since it uses as much as digits as its factorization.

21002210113211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848589.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 21002210113211 its reverse (11231101220012), we get a palindrome (32233311333223).

The spelling of 21002210113211 in words is "twenty-one trillion, two billion, two hundred ten million, one hundred thirteen thousand, two hundred eleven".