2021122313 has 8 divisors (see below), whose sum is σ = 2310126528. Its totient is φ = 1732186224.

The previous prime is 2021122297. The next prime is 2021122319. The reversal of 2021122313 is 3132211202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2021122313 - 2⁴ = 2021122297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2021122291 and 2021122300.

It is not an unprimeable number, because it can be changed into a prime (2021122319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102395 + ... + 120527.

It is an arithmetic number, because the mean of its divisors is an integer number (288765816).

Almost surely, 2^2021122313 is an apocalyptic number.

It is an amenable number.

2021122313 is a deficient number, since it is larger than the sum of its proper divisors (289004215).

2021122313 is a wasteful number, since it uses less digits than its factorization.

2021122313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34063.

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

The square root of 2021122313 is about 44956.8939429761. The cubic root of 2021122313 is about 1264.3409343189.

Adding to 2021122313 its reverse (3132211202), we get a palindrome (5153333515).

Subtracting 2021122313 from its reverse (3132211202), we obtain a square (1111088889 = 33333²).

It can be divided in two parts, 20211 and 22313, that added together give a palindrome (42524).

The spelling of 2021122313 in words is "two billion, twenty-one million, one hundred twenty-two thousand, three hundred thirteen".