2101311001213 has 4 divisors (see below), whose sum is σ = 2102051684700. Its totient is φ = 2100570317728.

The previous prime is 2101311001151. The next prime is 2101311001259. The reversal of 2101311001213 is 3121001131012.

It is a happy number.

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 67372950969 + 2033938050244 = 259563^2 + 1426162^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101311001213 - 2³⁷ = 1963872047741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101311001513) 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, 370337488 + ... + 370343161.

It is an arithmetic number, because the mean of its divisors is an integer number (525512921175).

Almost surely, 2^{2101311001213} is an apocalyptic number.

It is an amenable number.

2101311001213 is a deficient number, since it is larger than the sum of its proper divisors (740683487).

2101311001213 is an equidigital number, since it uses as much as digits as its factorization.

2101311001213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740683486.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 2101311001213 its reverse (3121001131012), we get a palindrome (5222312132225).

The spelling of 2101311001213 in words is "two trillion, one hundred one billion, three hundred eleven million, one thousand, two hundred thirteen".