21120210301111 has 8 divisors (see below), whose sum is σ = 21154943015024. Its totient is φ = 21085483446720.

The previous prime is 21120210301109. The next prime is 21120210301123. The reversal of 21120210301111 is 11110301202112.

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 21120210301111 - 2¹ = 21120210301109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21120210301171) 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, 5779321 + ... + 8697181.

It is an arithmetic number, because the mean of its divisors is an integer number (2644367876878).

Almost surely, 2^{21120210301111} is an apocalyptic number.

21120210301111 is a deficient number, since it is larger than the sum of its proper divisors (34732713913).

21120210301111 is a wasteful number, since it uses less digits than its factorization.

21120210301111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2929761.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 21120210301111 its reverse (11110301202112), we get a palindrome (32230511503223).

The spelling of 21120210301111 in words is "twenty-one trillion, one hundred twenty billion, two hundred ten million, three hundred one thousand, one hundred eleven".