212050379969 has 2 divisors, whose sum is σ = 212050379970. Its totient is φ = 212050379968.

The previous prime is 212050379963. The next prime is 212050379993. The reversal of 212050379969 is 969973050212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196745473600 + 15304906369 = 443560^2 + 123713^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212050379969 is a prime.

It is a super-2 number, since 2×212050379969² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212050379969.

It is not a weakly prime, because it can be changed into another prime (212050379963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106025189984 + 106025189985.

It is an arithmetic number, because the mean of its divisors is an integer number (106025189985).

Almost surely, 2^212050379969 is an apocalyptic number.

It is an amenable number.

212050379969 is a deficient number, since it is larger than the sum of its proper divisors (1).

212050379969 is an equidigital number, since it uses as much as digits as its factorization.

212050379969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1837080, while the sum is 53.

The spelling of 212050379969 in words is "two hundred twelve billion, fifty million, three hundred seventy-nine thousand, nine hundred sixty-nine".