10211999947 has 2 divisors, whose sum is σ = 10211999948. Its totient is φ = 10211999946.

The previous prime is 10211999921. The next prime is 10212000031. The reversal of 10211999947 is 74999911201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10211999947 - 2²³ = 10203611339 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10211999894 and 10211999903.

It is not a weakly prime, because it can be changed into another prime (10211999647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105999973 + 5105999974.

It is an arithmetic number, because the mean of its divisors is an integer number (5105999974).

Almost surely, 2^10211999947 is an apocalyptic number.

10211999947 is a deficient number, since it is larger than the sum of its proper divisors (1).

10211999947 is an equidigital number, since it uses as much as digits as its factorization.

10211999947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 367416, while the sum is 52.

The spelling of 10211999947 in words is "ten billion, two hundred eleven million, nine hundred ninety-nine thousand, nine hundred forty-seven".