21000030001201 has 8 divisors (see below), whose sum is σ = 21081941979264. Its totient is φ = 20918119572480.

The previous prime is 21000030001183. The next prime is 21000030001213. The reversal of 21000030001201 is 10210003000012.

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 21000030001201 - 2¹³ = 21000029993009 is a prime.

It is a super-2 number, since 2×21000030001201² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21000030001001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32063716 + ... + 32712106.

It is an arithmetic number, because the mean of its divisors is an integer number (2635242747408).

Almost surely, 2^{21000030001201} is an apocalyptic number.

It is an amenable number.

21000030001201 is a deficient number, since it is larger than the sum of its proper divisors (81911978063).

21000030001201 is a wasteful number, since it uses less digits than its factorization.

21000030001201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774671.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 21000030001201 its reverse (10210003000012), we get a palindrome (31210033001213).

The spelling of 21000030001201 in words is "twenty-one trillion, thirty million, one thousand, two hundred one".