2113205402 has 32 divisors (see below), whose sum is σ = 3958001280. Its totient is φ = 822070080.

The previous prime is 2113205401. The next prime is 2113205411. The reversal of 2113205402 is 2045023112.

It is not an unprimeable number, because it can be changed into a prime (2113205401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94124 + ... + 114392.

It is an arithmetic number, because the mean of its divisors is an integer number (123687540).

Almost surely, 2^2113205402 is an apocalyptic number.

2113205402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2113205402 is a deficient number, since it is larger than the sum of its proper divisors (1844795878).

2113205402 is a wasteful number, since it uses less digits than its factorization.

2113205402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20966.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2113205402 is about 45969.6138987484. The cubic root of 2113205402 is about 1283.2577744836.

Adding to 2113205402 its reverse (2045023112), we get a palindrome (4158228514).

The spelling of 2113205402 in words is "two billion, one hundred thirteen million, two hundred five thousand, four hundred two".