2116213245 has 24 divisors (see below), whose sum is σ = 3670781400. Its totient is φ = 1127822976.

The previous prime is 2116213241. The next prime is 2116213247. The reversal of 2116213245 is 5423126112.

2116213245 is a `hidden beast` number, since 2 + 1 + 1 + 621 + 32 + 4 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 138721284 + 1977491961 = 11778^2 + 44469^2 .

It is not a de Polignac number, because 2116213245 - 2² = 2116213241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2116213241) 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, 47851 + ... + 80759.

It is an arithmetic number, because the mean of its divisors is an integer number (152949225).

Almost surely, 2^2116213245 is an apocalyptic number.

It is an amenable number.

2116213245 is a deficient number, since it is larger than the sum of its proper divisors (1554568155).

2116213245 is a wasteful number, since it uses less digits than its factorization.

2116213245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34349 (or 34346 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 2116213245 is about 46002.3178220402. The cubic root of 2116213245 is about 1283.8663299431.

Adding to 2116213245 its reverse (5423126112), we get a palindrome (7539339357).

The spelling of 2116213245 in words is "two billion, one hundred sixteen million, two hundred thirteen thousand, two hundred forty-five".