2061210997 has 2 divisors, whose sum is σ = 2061210998. Its totient is φ = 2061210996.

The previous prime is 2061210947. The next prime is 2061211021. The reversal of 2061210997 is 7990121602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1623606436 + 437604561 = 40294^2 + 20919^2 .

It is a cyclic number.

It is not a de Polignac number, because 2061210997 - 2²⁷ = 1926993269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2061210937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1030605498 + 1030605499.

It is an arithmetic number, because the mean of its divisors is an integer number (1030605499).

Almost surely, 2^2061210997 is an apocalyptic number.

It is an amenable number.

2061210997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2061210997 is an equidigital number, since it uses as much as digits as its factorization.

2061210997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 2061210997 is about 45400.5616374952. The cubic root of 2061210997 is about 1272.6456096346.

The spelling of 2061210997 in words is "two billion, sixty-one million, two hundred ten thousand, nine hundred ninety-seven".