21201030212011 has 8 divisors (see below), whose sum is σ = 24033556515920. Its totient is φ = 18540172168992.

The previous prime is 21201030211993. The next prime is 21201030212083. The reversal of 21201030212011 is 11021203010212.

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

It is a cyclic number.

It is not a de Polignac number, because 21201030212011 - 2³⁹ = 20651274398123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21201030212311) 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, 42917064960 + ... + 42917065453.

It is an arithmetic number, because the mean of its divisors is an integer number (3004194564490).

Almost surely, 2^{21201030212011} is an apocalyptic number.

21201030212011 is a deficient number, since it is larger than the sum of its proper divisors (2832526303909).

21201030212011 is a wasteful number, since it uses less digits than its factorization.

21201030212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85834130445.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21201030212011 its reverse (11021203010212), we get a palindrome (32222233222223).

The spelling of 21201030212011 in words is "twenty-one trillion, two hundred one billion, thirty million, two hundred twelve thousand, eleven".