21201322132001 has 12 divisors (see below), whose sum is σ = 24530455362000. Its totient is φ = 18259511882040.

The previous prime is 21201322131971. The next prime is 21201322132007. The reversal of 21201322132001 is 10023122310212.

It is not a de Polignac number, because 21201322132001 - 2⁶ = 21201322131937 is a prime.

It is a super-3 number, since 3×21201322132001³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21201322132007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4610985551 + ... + 4610990148.

It is an arithmetic number, because the mean of its divisors is an integer number (2044204613500).

Almost surely, 2^{21201322132001} is an apocalyptic number.

It is an amenable number.

21201322132001 is a deficient number, since it is larger than the sum of its proper divisors (3329133229999).

21201322132001 is a wasteful number, since it uses less digits than its factorization.

21201322132001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9221975740 (or 9221975729 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21201322132001 its reverse (10023122310212), we get a palindrome (31224444442213).

The spelling of 21201322132001 in words is "twenty-one trillion, two hundred one billion, three hundred twenty-two million, one hundred thirty-two thousand, one".