20121100000201 has 4 divisors (see below), whose sum is σ = 20123415706900. Its totient is φ = 20118784293504.

The previous prime is 20121100000093. The next prime is 20121100000247. The reversal of 20121100000201 is 10200000112102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17941357804176 + 2179742196025 = 4235724^2 + 1476395^2 .

It is a cyclic number.

It is not a de Polignac number, because 20121100000201 - 2¹⁵ = 20121099967433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20121100000501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1157840316 + ... + 1157857693.

It is an arithmetic number, because the mean of its divisors is an integer number (5030853926725).

Almost surely, 2^{20121100000201} is an apocalyptic number.

It is an amenable number.

20121100000201 is a deficient number, since it is larger than the sum of its proper divisors (2315706699).

20121100000201 is an equidigital number, since it uses as much as digits as its factorization.

20121100000201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2315706698.

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

Adding to 20121100000201 its reverse (10200000112102), we get a palindrome (30321100112303).

The spelling of 20121100000201 in words is "twenty trillion, one hundred twenty-one billion, one hundred million, two hundred one", and thus it is an aban number.