21026343301011 has 32 divisors (see below), whose sum is σ = 31314294681600. Its totient is φ = 13943696801760.

The previous prime is 21026343300997. The next prime is 21026343301021. The reversal of 21026343301011 is 11010334362012.

It is a happy number.

21026343301011 is a `hidden beast` number, since 2 + 1 + 0 + 2 + 6 + 343 + 301 + 0 + 11 = 666.

It is not a de Polignac number, because 21026343301011 - 2²⁵ = 21026309746579 is a prime.

It is a super-2 number, since 2×21026343301011² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (21026343301021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 217262445 + ... + 217359201.

It is an arithmetic number, because the mean of its divisors is an integer number (978571708800).

Almost surely, 2^{21026343301011} is an apocalyptic number.

21026343301011 is a deficient number, since it is larger than the sum of its proper divisors (10287951380589).

21026343301011 is a wasteful number, since it uses less digits than its factorization.

21026343301011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139096 (or 139090 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 21026343301011 its reverse (11010334362012), we get a palindrome (32036677663023).

The spelling of 21026343301011 in words is "twenty-one trillion, twenty-six billion, three hundred forty-three million, three hundred one thousand, eleven".