3020001021 has 12 divisors (see below), whose sum is σ = 4421981148. Its totient is φ = 1985753664.

The previous prime is 3020000959. The next prime is 3020001041. The reversal of 3020001021 is 1201000203.

It is a happy number.

3020001021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1290605625 + 1729395396 = 35925^2 + 41586^2 .

It is not a de Polignac number, because 3020001021 - 2⁶ = 3020000957 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 3020000994 and 3020001012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3020001041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2297670 + ... + 2298983.

It is an arithmetic number, because the mean of its divisors is an integer number (368498429).

Almost surely, 2^3020001021 is an apocalyptic number.

It is an amenable number.

3020001021 is a deficient number, since it is larger than the sum of its proper divisors (1401980127).

3020001021 is a wasteful number, since it uses less digits than its factorization.

3020001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4596732 (or 4596729 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 3020001021 is about 54954.5359456342. The cubic root of 3020001021 is about 1445.4476362864.

Adding to 3020001021 its reverse (1201000203), we get a palindrome (4221001224).

The spelling of 3020001021 in words is "three billion, twenty million, one thousand, twenty-one".