2021001210061 has 2 divisors, whose sum is σ = 2021001210062. Its totient is φ = 2021001210060.

The previous prime is 2021001209993. The next prime is 2021001210097. The reversal of 2021001210061 is 1600121001202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1613867885161 + 407133324900 = 1270381^2 + 638070^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021001210061 - 2¹¹ = 2021001208013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021001213061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010500605030 + 1010500605031.

It is an arithmetic number, because the mean of its divisors is an integer number (1010500605031).

Almost surely, 2^{2021001210061} is an apocalyptic number.

It is an amenable number.

2021001210061 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021001210061 is an equidigital number, since it uses as much as digits as its factorization.

2021001210061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 2021001210061 its reverse (1600121001202), we get a palindrome (3621122211263).

The spelling of 2021001210061 in words is "two trillion, twenty-one billion, one million, two hundred ten thousand, sixty-one".