21202001202011 has 8 divisors (see below), whose sum is σ = 24235746766560. Its totient is φ = 18169477699968.

The previous prime is 21202001202001. The next prime is 21202001202059. The reversal of 21202001202011 is 11020210020212.

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

It is a de Polignac number, because none of the positive numbers 2^k-21202001202011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21202001202001) 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, 305478446 + ... + 305547843.

It is an arithmetic number, because the mean of its divisors is an integer number (3029468345820).

Almost surely, 2^{21202001202011} is an apocalyptic number.

21202001202011 is a deficient number, since it is larger than the sum of its proper divisors (3033745564549).

21202001202011 is an equidigital number, since it uses as much as digits as its factorization.

21202001202011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611031253.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21202001202011 its reverse (11020210020212), we get a palindrome (32222211222223).

The spelling of 21202001202011 in words is "twenty-one trillion, two hundred two billion, one million, two hundred two thousand, eleven".