1210111010201 has 4 divisors (see below), whose sum is σ = 1251838976100. Its totient is φ = 1168383044304.

The previous prime is 1210111010179. The next prime is 1210111010219. The reversal of 1210111010201 is 1020101110121.

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 216299406400 + 993811603801 = 465080^2 + 996901^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1210111010201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210111010221) 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, 20863982906 + ... + 20863982963.

It is an arithmetic number, because the mean of its divisors is an integer number (312959744025).

Almost surely, 2^{1210111010201} is an apocalyptic number.

It is an amenable number.

1210111010201 is a deficient number, since it is larger than the sum of its proper divisors (41727965899).

1210111010201 is an equidigital number, since it uses as much as digits as its factorization.

1210111010201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41727965898.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1210111010201 its reverse (1020101110121), we get a palindrome (2230212120322).

The spelling of 1210111010201 in words is "one trillion, two hundred ten billion, one hundred eleven million, ten thousand, two hundred one".