2113233220021 has 16 divisors (see below), whose sum is σ = 2638493296128. Its totient is φ = 1644292162800.

The previous prime is 2113233220013. The next prime is 2113233220027. The reversal of 2113233220021 is 1200223323112.

It is not a de Polignac number, because 2113233220021 - 2³ = 2113233220013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2113233219974 and 2113233220001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113233220027) 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, 19805395 + ... + 19911808.

It is an arithmetic number, because the mean of its divisors is an integer number (164905831008).

Almost surely, 2^{2113233220021} is an apocalyptic number.

It is an amenable number.

2113233220021 is a deficient number, since it is larger than the sum of its proper divisors (525260076107).

2113233220021 is a wasteful number, since it uses less digits than its factorization.

2113233220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39717912.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 2113233220021 its reverse (1200223323112), we get a palindrome (3313456543133).

The spelling of 2113233220021 in words is "two trillion, one hundred thirteen billion, two hundred thirty-three million, two hundred twenty thousand, twenty-one".