1210110020001 has 24 divisors (see below), whose sum is σ = 1867735944360. Its totient is φ = 752318793216.

The previous prime is 1210110019991. The next prime is 1210110020033. The reversal of 1210110020001 is 1000200110121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 522577181025 + 687532838976 = 722895^2 + 829176^2 .

It is not a de Polignac number, because 1210110020001 - 2⁷ = 1210110019873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1210110020051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36264130 + ... + 36297483.

It is an arithmetic number, because the mean of its divisors is an integer number (77822331015).

Almost surely, 2^{1210110020001} is an apocalyptic number.

It is an amenable number.

1210110020001 is a deficient number, since it is larger than the sum of its proper divisors (657625924359).

1210110020001 is a wasteful number, since it uses less digits than its factorization.

1210110020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72561745 (or 72561742 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1210110020001 its reverse (1000200110121), we get a palindrome (2210310130122).

The spelling of 1210110020001 in words is "one trillion, two hundred ten billion, one hundred ten million, twenty thousand, one".