10212194977 has 2 divisors, whose sum is σ = 10212194978. Its totient is φ = 10212194976.

The previous prime is 10212194969. The next prime is 10212195023. The reversal of 10212194977 is 77949121201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10112514721 + 99680256 = 100561^2 + 9984^2 .

It is a cyclic number.

It is not a de Polignac number, because 10212194977 - 2³ = 10212194969 is a prime.

It is not a weakly prime, because it can be changed into another prime (10212194077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5106097488 + 5106097489.

It is an arithmetic number, because the mean of its divisors is an integer number (5106097489).

Almost surely, 2^10212194977 is an apocalyptic number.

It is an amenable number.

10212194977 is a deficient number, since it is larger than the sum of its proper divisors (1).

10212194977 is an equidigital number, since it uses as much as digits as its factorization.

10212194977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 43.

The spelling of 10212194977 in words is "ten billion, two hundred twelve million, one hundred ninety-four thousand, nine hundred seventy-seven".