1810122100201 has 4 divisors (see below), whose sum is σ = 1812937220752. Its totient is φ = 1807306979652.

The previous prime is 1810122100181. The next prime is 1810122100277. The reversal of 1810122100201 is 1020012210181.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1810122100201 - 2²⁷ = 1809987882473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1810122107201) 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, 1407559311 + ... + 1407560596.

It is an arithmetic number, because the mean of its divisors is an integer number (453234305188).

Almost surely, 2^{1810122100201} is an apocalyptic number.

It is an amenable number.

1810122100201 is a deficient number, since it is larger than the sum of its proper divisors (2815120551).

1810122100201 is an equidigital number, since it uses as much as digits as its factorization.

1810122100201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2815120550.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 1810122100201 its reverse (1020012210181), we get a palindrome (2830134310382).

The spelling of 1810122100201 in words is "one trillion, eight hundred ten billion, one hundred twenty-two million, one hundred thousand, two hundred one".