102046212661 has 2 divisors, whose sum is σ = 102046212662. Its totient is φ = 102046212660.

The previous prime is 102046212623. The next prime is 102046212679. The reversal of 102046212661 is 166212640201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102036163761 + 10048900 = 319431^2 + 3170^2 .

It is a cyclic number.

It is not a de Polignac number, because 102046212661 - 2²⁵ = 102012658229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102046212601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51023106330 + 51023106331.

It is an arithmetic number, because the mean of its divisors is an integer number (51023106331).

Almost surely, 2^102046212661 is an apocalyptic number.

It is an amenable number.

102046212661 is a deficient number, since it is larger than the sum of its proper divisors (1).

102046212661 is an equidigital number, since it uses as much as digits as its factorization.

102046212661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

Adding to 102046212661 its reverse (166212640201), we get a palindrome (268258852862).

The spelling of 102046212661 in words is "one hundred two billion, forty-six million, two hundred twelve thousand, six hundred sixty-one".