10122011009947 has 2 divisors, whose sum is σ = 10122011009948. Its totient is φ = 10122011009946.

The previous prime is 10122011009909. The next prime is 10122011010011. The reversal of 10122011009947 is 74990011022101.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10122011009947 - 2²⁷ = 10121876792219 is a prime.

It is not a weakly prime, because it can be changed into another prime (10122011009147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5061005504973 + 5061005504974.

It is an arithmetic number, because the mean of its divisors is an integer number (5061005504974).

Almost surely, 2^{10122011009947} is an apocalyptic number.

10122011009947 is a deficient number, since it is larger than the sum of its proper divisors (1).

10122011009947 is an equidigital number, since it uses as much as digits as its factorization.

10122011009947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 37.

The spelling of 10122011009947 in words is "ten trillion, one hundred twenty-two billion, eleven million, nine thousand, nine hundred forty-seven".