1210020061 has 2 divisors, whose sum is σ = 1210020062. Its totient is φ = 1210020060.

The previous prime is 1210020013. The next prime is 1210020083. The reversal of 1210020061 is 1600200121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 686754436 + 523265625 = 26206^2 + 22875^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210020061 - 2¹¹ = 1210018013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1210030061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605010030 + 605010031.

It is an arithmetic number, because the mean of its divisors is an integer number (605010031).

Almost surely, 2^1210020061 is an apocalyptic number.

It is an amenable number.

1210020061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210020061 is an equidigital number, since it uses as much as digits as its factorization.

1210020061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1210020061 is about 34785.3426172576. The cubic root of 1210020061 is about 1065.6081257276.

Adding to 1210020061 its reverse (1600200121), we get a palindrome (2810220182).

The spelling of 1210020061 in words is "one billion, two hundred ten million, twenty thousand, sixty-one".