2113212023 has 4 divisors (see below), whose sum is σ = 2275766808. Its totient is φ = 1950657240.

The previous prime is 2113211981. The next prime is 2113212029. The reversal of 2113212023 is 3202123112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2113212023 - 2⁸ = 2113211767 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2113211992 and 2113212010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113212029) 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, 81277373 + ... + 81277398.

It is an arithmetic number, because the mean of its divisors is an integer number (568941702).

Almost surely, 2^2113212023 is an apocalyptic number.

2113212023 is a deficient number, since it is larger than the sum of its proper divisors (162554785).

2113212023 is a wasteful number, since it uses less digits than its factorization.

2113212023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162554784.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2113212023 is about 45969.6859136540. The cubic root of 2113212023 is about 1283.2591146973.

Adding to 2113212023 its reverse (3202123112), we get a palindrome (5315335135).

The spelling of 2113212023 in words is "two billion, one hundred thirteen million, two hundred twelve thousand, twenty-three".