21201002201211 has 16 divisors (see below), whose sum is σ = 32306985151488. Its totient is φ = 12114597369600.

The previous prime is 21201002201201. The next prime is 21201002201233. The reversal of 21201002201211 is 11210220010212.

It is not a de Polignac number, because 21201002201211 - 2¹⁴ = 21201002184827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21201002201201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9876310 + ... + 11829771.

It is an arithmetic number, because the mean of its divisors is an integer number (2019186571968).

Almost surely, 2^{21201002201211} is an apocalyptic number.

21201002201211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21201002201211 is a deficient number, since it is larger than the sum of its proper divisors (11105982950277).

21201002201211 is a wasteful number, since it uses less digits than its factorization.

21201002201211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21752602.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21201002201211 its reverse (11210220010212), we get a palindrome (32411222211423).

The spelling of 21201002201211 in words is "twenty-one trillion, two hundred one billion, two million, two hundred one thousand, two hundred eleven".