21003320122011 has 24 divisors (see below), whose sum is σ = 30349629213696. Its totient is φ = 13996906511280.

The previous prime is 21003320121899. The next prime is 21003320122013. The reversal of 21003320122011 is 11022102330012.

21003320122011 is a `hidden beast` number, since 2 + 100 + 332 + 0 + 1 + 220 + 11 = 666.

It is not a de Polignac number, because 21003320122011 - 2⁹ = 21003320121499 is a prime.

It is a super-2 number, since 2×21003320122011² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21003320122013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 371429206 + ... + 371485748.

It is an arithmetic number, because the mean of its divisors is an integer number (1264567883904).

Almost surely, 2^{21003320122011} is an apocalyptic number.

21003320122011 is a deficient number, since it is larger than the sum of its proper divisors (9346309091685).

21003320122011 is a wasteful number, since it uses less digits than its factorization.

21003320122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71463 (or 71460 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21003320122011 its reverse (11022102330012), we get a palindrome (32025422452023).

The spelling of 21003320122011 in words is "twenty-one trillion, three billion, three hundred twenty million, one hundred twenty-two thousand, eleven".