21030230220011 has 12 divisors (see below), whose sum is σ = 22340632979448. Its totient is φ = 19792660430592.

The previous prime is 21030230219993. The next prime is 21030230220047. The reversal of 21030230220011 is 11002203203012.

It is not a de Polignac number, because 21030230220011 - 2¹⁴ = 21030230203627 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (21030230220061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10867400 + ... + 12655466.

It is an arithmetic number, because the mean of its divisors is an integer number (1861719414954).

Almost surely, 2^{21030230220011} is an apocalyptic number.

21030230220011 is a deficient number, since it is larger than the sum of its proper divisors (1310402759437).

21030230220011 is a wasteful number, since it uses less digits than its factorization.

21030230220011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1828798 (or 1828781 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21030230220011 its reverse (11002203203012), we get a palindrome (32032433423023).

The spelling of 21030230220011 in words is "twenty-one trillion, thirty billion, two hundred thirty million, two hundred twenty thousand, eleven".