20100021001201 has 2 divisors, whose sum is σ = 20100021001202. Its totient is φ = 20100021001200.

The previous prime is 20100021001187. The next prime is 20100021001213. The reversal of 20100021001201 is 10210012000102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19714132803600 + 385888197601 = 4440060^2 + 621199^2 .

It is a cyclic number.

It is not a de Polignac number, because 20100021001201 - 2⁵ = 20100021001169 is a prime.

It is not a weakly prime, because it can be changed into another prime (20100021001901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050010500600 + 10050010500601.

It is an arithmetic number, because the mean of its divisors is an integer number (10050010500601).

Almost surely, 2^{20100021001201} is an apocalyptic number.

It is an amenable number.

20100021001201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100021001201 is an equidigital number, since it uses as much as digits as its factorization.

20100021001201 is an odious number, because the sum of its binary digits is odd.

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

Adding to 20100021001201 its reverse (10210012000102), we get a palindrome (30310033001303).

The spelling of 20100021001201 in words is "twenty trillion, one hundred billion, twenty-one million, one thousand, two hundred one".