6212123861 has 2 divisors, whose sum is σ = 6212123862. Its totient is φ = 6212123860.

The previous prime is 6212123849. The next prime is 6212123873. The reversal of 6212123861 is 1683212126.

It is a balanced prime because it is at equal distance from previous prime (6212123849) and next prime (6212123873).

It can be written as a sum of positive squares in only one way, i.e., 4805123761 + 1407000100 = 69319^2 + 37510^2 .

It is a cyclic number.

It is not a de Polignac number, because 6212123861 - 2¹⁴ = 6212107477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6212123831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3106061930 + 3106061931.

It is an arithmetic number, because the mean of its divisors is an integer number (3106061931).

Almost surely, 2^6212123861 is an apocalyptic number.

It is an amenable number.

6212123861 is a deficient number, since it is larger than the sum of its proper divisors (1).

6212123861 is an equidigital number, since it uses as much as digits as its factorization.

6212123861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 32.

The square root of 6212123861 is about 78817.0277351284. The cubic root of 6212123861 is about 1838.2872235877.

Adding to 6212123861 its reverse (1683212126), we get a palindrome (7895335987).

The spelling of 6212123861 in words is "six billion, two hundred twelve million, one hundred twenty-three thousand, eight hundred sixty-one".