21202121100201 has 8 divisors (see below), whose sum is σ = 28732929141504. Its totient is φ = 13903030229520.

The previous prime is 21202121100187. The next prime is 21202121100221. The reversal of 21202121100201 is 10200112120212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21202121100201 - 2¹⁴ = 21202121083817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21202121100221) 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, 57929292441 + ... + 57929292806.

It is an arithmetic number, because the mean of its divisors is an integer number (3591616142688).

Almost surely, 2^{21202121100201} is an apocalyptic number.

It is an amenable number.

21202121100201 is a deficient number, since it is larger than the sum of its proper divisors (7530808041303).

21202121100201 is a wasteful number, since it uses less digits than its factorization.

21202121100201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115858585311.

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

Adding to 21202121100201 its reverse (10200112120212), we get a palindrome (31402233220413).

The spelling of 21202121100201 in words is "twenty-one trillion, two hundred two billion, one hundred twenty-one million, one hundred thousand, two hundred one".