3020111021 has 8 divisors (see below), whose sum is σ = 3042407544. Its totient is φ = 2997895680.

The previous prime is 3020110981. The next prime is 3020111023. The reversal of 3020111021 is 1201110203.

It can be written as a sum of positive squares in 4 ways, for example, as 294122500 + 2725988521 = 17150^2 + 52211^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3020111021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3020110993 and 3020111011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3020111023) 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, 55415 + ... + 95451.

It is an arithmetic number, because the mean of its divisors is an integer number (380300943).

Almost surely, 2^3020111021 is an apocalyptic number.

It is an amenable number.

3020111021 is a deficient number, since it is larger than the sum of its proper divisors (22296523).

3020111021 is a wasteful number, since it uses less digits than its factorization.

3020111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40591.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 3020111021 is about 54955.5367638239. The cubic root of 3020111021 is about 1445.4651856524.

Adding to 3020111021 its reverse (1201110203), we get a palindrome (4221221224).

The spelling of 3020111021 in words is "three billion, twenty million, one hundred eleven thousand, twenty-one".