10212122120201 has 4 divisors (see below), whose sum is σ = 10212953670804. Its totient is φ = 10211290569600.

The previous prime is 10212122120197. The next prime is 10212122120227. The reversal of 10212122120201 is 10202122121201.

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 5106352556176 + 5105769564025 = 2259724^2 + 2259595^2 .

It is a cyclic number.

It is not a de Polignac number, because 10212122120201 - 2² = 10212122120197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10212122120201.

It is not an unprimeable number, because it can be changed into a prime (10212122120701) 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, 415756880 + ... + 415781441.

It is an arithmetic number, because the mean of its divisors is an integer number (2553238417701).

Almost surely, 2^{10212122120201} is an apocalyptic number.

It is an amenable number.

10212122120201 is a deficient number, since it is larger than the sum of its proper divisors (831550603).

10212122120201 is an equidigital number, since it uses as much as digits as its factorization.

10212122120201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831550602.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 10212122120201 its reverse (10202122121201), we get a palindrome (20414244241402).

It can be divided in two parts, 1021212 and 2120201, that added together give a palindrome (3141413).

The spelling of 10212122120201 in words is "ten trillion, two hundred twelve billion, one hundred twenty-two million, one hundred twenty thousand, two hundred one".