2021110232213 has 4 divisors (see below), whose sum is σ = 2139999069420. Its totient is φ = 1902221395008.

The previous prime is 2021110232203. The next prime is 2021110232221. The reversal of 2021110232213 is 3122320111202.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1873194610609 + 147915621604 = 1368647^2 + 384598^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021110232213 - 2¹² = 2021110228117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021110232203) 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, 59444418578 + ... + 59444418611.

It is an arithmetic number, because the mean of its divisors is an integer number (534999767355).

Almost surely, 2^{2021110232213} is an apocalyptic number.

It is an amenable number.

2021110232213 is a deficient number, since it is larger than the sum of its proper divisors (118888837207).

2021110232213 is a wasteful number, since it uses less digits than its factorization.

2021110232213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118888837206.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2021110232213 its reverse (3122320111202), we get a palindrome (5143430343415).

The spelling of 2021110232213 in words is "two trillion, twenty-one billion, one hundred ten million, two hundred thirty-two thousand, two hundred thirteen".