21000201121011 has 8 divisors (see below), whose sum is σ = 32000306470144. Its totient is φ = 12000114926280.

The previous prime is 21000201120919. The next prime is 21000201121037. The reversal of 21000201121011 is 11012110200012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21000201121011 - 2⁹ = 21000201120499 is a prime.

It is a super-2 number, since 2×21000201121011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21000201122011) 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, 500004788575 + ... + 500004788616.

It is an arithmetic number, because the mean of its divisors is an integer number (4000038308768).

Almost surely, 2^{21000201121011} is an apocalyptic number.

21000201121011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21000201121011 is a deficient number, since it is larger than the sum of its proper divisors (11000105349133).

21000201121011 is a wasteful number, since it uses less digits than its factorization.

21000201121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000009577201.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21000201121011 its reverse (11012110200012), we get a palindrome (32012311321023).

The spelling of 21000201121011 in words is "twenty-one trillion, two hundred one million, one hundred twenty-one thousand, eleven".