21000202101011 has 8 divisors (see below), whose sum is σ = 24000285689184. Its totient is φ = 18000132192000.

The previous prime is 21000202100939. The next prime is 21000202101019. The reversal of 21000202101011 is 11010120200012.

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

It is not a de Polignac number, because 21000202101011 - 2³⁸ = 20725324194067 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21000202100983 and 21000202101001.

It is not an unprimeable number, because it can be changed into a prime (21000202101019) 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, 113261 + ... + 6481761.

It is an arithmetic number, because the mean of its divisors is an integer number (3000035711148).

Almost surely, 2^{21000202101011} is an apocalyptic number.

21000202101011 is a deficient number, since it is larger than the sum of its proper divisors (3000083588173).

21000202101011 is an equidigital number, since it uses as much as digits as its factorization.

21000202101011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6839581.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21000202101011 its reverse (11010120200012), we get a palindrome (32010322301023).

The spelling of 21000202101011 in words is "twenty-one trillion, two hundred two million, one hundred one thousand, eleven".