2021007061 has 4 divisors (see below), whose sum is σ = 2021784300. Its totient is φ = 2020229824.

The previous prime is 2021007059. The next prime is 2021007083. The reversal of 2021007061 is 1607001202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 837234225 + 1183772836 = 28935^2 + 34406^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021007061 - 2¹ = 2021007059 is a prime.

It is a super-2 number, since 2×2021007061² = 8168939081223715442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021007011) 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, 384706 + ... + 389923.

It is an arithmetic number, because the mean of its divisors is an integer number (505446075).

Almost surely, 2^2021007061 is an apocalyptic number.

It is an amenable number.

2021007061 is a deficient number, since it is larger than the sum of its proper divisors (777239).

2021007061 is an equidigital number, since it uses as much as digits as its factorization.

2021007061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777238.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 2021007061 is about 44955.6121190670. The cubic root of 2021007061 is about 1264.3169013694.

Adding to 2021007061 its reverse (1607001202), we get a palindrome (3628008263).

The spelling of 2021007061 in words is "two billion, twenty-one million, seven thousand, sixty-one".