2101201213 has 8 divisors (see below), whose sum is σ = 2123438328. Its totient is φ = 2079028224.

The previous prime is 2101201183. The next prime is 2101201237. The reversal of 2101201213 is 3121021012.

It can be written as a sum of positive squares in 4 ways, for example, as 133125444 + 1968075769 = 11538^2 + 44363^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2101201213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2101201193 and 2101201202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101201283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51331 + ... + 82687.

It is an arithmetic number, because the mean of its divisors is an integer number (265429791).

Almost surely, 2^2101201213 is an apocalyptic number.

It is an amenable number.

2101201213 is a deficient number, since it is larger than the sum of its proper divisors (22237115).

2101201213 is a wasteful number, since it uses less digits than its factorization.

2101201213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32063.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2101201213 is about 45838.8613842011. The cubic root of 2101201213 is about 1280.8232848506.

Adding to 2101201213 its reverse (3121021012), we get a palindrome (5222222225).

The spelling of 2101201213 in words is "two billion, one hundred one million, two hundred one thousand, two hundred thirteen".