3020210021 has 4 divisors (see below), whose sum is σ = 3197869452. Its totient is φ = 2842550592.

The previous prime is 3020210009. The next prime is 3020210023. The reversal of 3020210021 is 1200120203.

It is a happy number.

3020210021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1200120203 = 173 ⋅6937111.

It can be written as a sum of positive squares in 2 ways, for example, as 2050821796 + 969388225 = 45286^2 + 31135^2 .

It is a cyclic number.

It is not a de Polignac number, because 3020210021 - 2²⁶ = 2953101157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3020209984 and 3020210011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3020210023) 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, 88829690 + ... + 88829723.

It is an arithmetic number, because the mean of its divisors is an integer number (799467363).

Almost surely, 2^3020210021 is an apocalyptic number.

It is an amenable number.

3020210021 is a deficient number, since it is larger than the sum of its proper divisors (177659431).

3020210021 is a wasteful number, since it uses less digits than its factorization.

3020210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177659430.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 3020210021 is about 54956.4374846114. The cubic root of 3020210021 is about 1445.4809797174.

Adding to 3020210021 its reverse (1200120203), we get a palindrome (4220330224).

The spelling of 3020210021 in words is "three billion, twenty million, two hundred ten thousand, twenty-one".