21020101210011 has 8 divisors (see below), whose sum is σ = 28143095396944. Its totient is φ = 13955253914880.

The previous prime is 21020101209923. The next prime is 21020101210013. The reversal of 21020101210011 is 11001210102012.

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

It is not a de Polignac number, because 21020101210011 - 2²⁵ = 21020067655579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21020101210013) 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, 14536722106 + ... + 14536723551.

It is an arithmetic number, because the mean of its divisors is an integer number (3517886924618).

Almost surely, 2^{21020101210011} is an apocalyptic number.

21020101210011 is a deficient number, since it is larger than the sum of its proper divisors (7122994186933).

21020101210011 is a wasteful number, since it uses less digits than its factorization.

21020101210011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29073445901.

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

Adding to 21020101210011 its reverse (11001210102012), we get a palindrome (32021311312023).

The spelling of 21020101210011 in words is "twenty-one trillion, twenty billion, one hundred one million, two hundred ten thousand, eleven".