20101211021201 has 8 divisors (see below), whose sum is σ = 20400450264360. Its totient is φ = 19803602510208.

The previous prime is 20101211021167. The next prime is 20101211021267. The reversal of 20101211021201 is 10212011210102.

It can be written as a sum of positive squares in 4 ways, for example, as 3416763705601 + 16684447315600 = 1848449^2 + 4084660^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20101211021201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20101211020201) 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, 407658206 + ... + 407707511.

It is an arithmetic number, because the mean of its divisors is an integer number (2550056283045).

Almost surely, 2^{20101211021201} is an apocalyptic number.

It is an amenable number.

20101211021201 is a deficient number, since it is larger than the sum of its proper divisors (299239243159).

20101211021201 is an equidigital number, since it uses as much as digits as its factorization.

20101211021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815366083.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20101211021201 its reverse (10212011210102), we get a palindrome (30313222231303).

The spelling of 20101211021201 in words is "twenty trillion, one hundred one billion, two hundred eleven million, twenty-one thousand, two hundred one".