2113012213 has 8 divisors (see below), whose sum is σ = 2298083256. Its totient is φ = 1931160000.

The previous prime is 2113012189. The next prime is 2113012241. The reversal of 2113012213 is 3122103112.

It can be written as a sum of positive squares in 4 ways, for example, as 243141649 + 1869870564 = 15593^2 + 43242^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2113012213 - 2²¹ = 2110915061 is a prime.

It is a super-2 number, since 2×2113012213² = 8929641224574314738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113012273) 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, 803338 + ... + 805963.

It is an arithmetic number, because the mean of its divisors is an integer number (287260407).

Almost surely, 2^2113012213 is an apocalyptic number.

It is an amenable number.

2113012213 is a deficient number, since it is larger than the sum of its proper divisors (185071043).

2113012213 is a wasteful number, since it uses less digits than its factorization.

2113012213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1609415.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2113012213 is about 45967.5125822575. The cubic root of 2113012213 is about 1283.2186681981.

Adding to 2113012213 its reverse (3122103112), we get a palindrome (5235115325).

The spelling of 2113012213 in words is "two billion, one hundred thirteen million, twelve thousand, two hundred thirteen".