2021151113 has 16 divisors (see below), whose sum is σ = 2110095360. Its totient is φ = 1933827600.

The previous prime is 2021151101. The next prime is 2021151127. The reversal of 2021151113 is 3111511202.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2021151113 is a prime.

It is a super-2 number, since 2×2021151113² = 8170103643162277538, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2021151091 and 2021151100.

It is not an unprimeable number, because it can be changed into a prime (2021151133) 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, 1058906 + ... + 1060812.

It is an arithmetic number, because the mean of its divisors is an integer number (131880960).

Almost surely, 2^2021151113 is an apocalyptic number.

It is an amenable number.

2021151113 is a deficient number, since it is larger than the sum of its proper divisors (88944247).

2021151113 is a wasteful number, since it uses less digits than its factorization.

2021151113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2308.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 2021151113 is about 44957.2142486609. The cubic root of 2021151113 is about 1264.3469397028.

Adding to 2021151113 its reverse (3111511202), we get a palindrome (5132662315).

The spelling of 2021151113 in words is "two billion, twenty-one million, one hundred fifty-one thousand, one hundred thirteen".