2021132113 has 16 divisors (see below), whose sum is σ = 2713689216. Its totient is φ = 1453760640.

The previous prime is 2021132111. The next prime is 2021132137. The reversal of 2021132113 is 3112311202.

It is a cyclic number.

It is not a de Polignac number, because 2021132113 - 2¹ = 2021132111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021132111) 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, 1008556 + ... + 1010557.

It is an arithmetic number, because the mean of its divisors is an integer number (169605576).

Almost surely, 2^2021132113 is an apocalyptic number.

It is an amenable number.

2021132113 is a deficient number, since it is larger than the sum of its proper divisors (692557103).

2021132113 is a wasteful number, since it uses less digits than its factorization.

2021132113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2019144.

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

The square root of 2021132113 is about 44957.0029361389. The cubic root of 2021132113 is about 1264.3429778240.

Adding to 2021132113 its reverse (3112311202), we get a palindrome (5133443315).

Subtracting 2021132113 from its reverse (3112311202), we obtain a square (1091179089 = 33033²).

The spelling of 2021132113 in words is "two billion, twenty-one million, one hundred thirty-two thousand, one hundred thirteen".