21000100201201 has 8 divisors (see below), whose sum is σ = 22973014152000. Its totient is φ = 19037821905840.

The previous prime is 21000100201193. The next prime is 21000100201319. The reversal of 21000100201201 is 10210200100012.

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 21000100201201 - 2³ = 21000100201193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21000100201001) 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, 2658909726 + ... + 2658917623.

It is an arithmetic number, because the mean of its divisors is an integer number (2871626769000).

Almost surely, 2^{21000100201201} is an apocalyptic number.

It is an amenable number.

21000100201201 is a deficient number, since it is larger than the sum of its proper divisors (1972913950799).

21000100201201 is a wasteful number, since it uses less digits than its factorization.

21000100201201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5317827719.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21000100201201 its reverse (10210200100012), we get a palindrome (31210300301213).

The spelling of 21000100201201 in words is "twenty-one trillion, one hundred million, two hundred one thousand, two hundred one".