21120020001201 has 8 divisors (see below), whose sum is σ = 30720029092704. Its totient is φ = 12800012121920.

The previous prime is 21120020001131. The next prime is 21120020001221. The reversal of 21120020001201 is 10210002002112.

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 21120020001201 - 2¹¹ = 21120019999153 is a prime.

It is a super-2 number, since 2×21120020001201² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21120020001221) 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, 320000303016 + ... + 320000303081.

It is an arithmetic number, because the mean of its divisors is an integer number (3840003636588).

Almost surely, 2^{21120020001201} is an apocalyptic number.

It is an amenable number.

21120020001201 is a deficient number, since it is larger than the sum of its proper divisors (9600009091503).

21120020001201 is a wasteful number, since it uses less digits than its factorization.

21120020001201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640000606111.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21120020001201 its reverse (10210002002112), we get a palindrome (31330022003313).

The spelling of 21120020001201 in words is "twenty-one trillion, one hundred twenty billion, twenty million, one thousand, two hundred one".