11021220201947 has 2 divisors, whose sum is σ = 11021220201948. Its totient is φ = 11021220201946.

The previous prime is 11021220201911. The next prime is 11021220202001. The reversal of 11021220201947 is 74910202212011.

It is a weak prime.

It is an emirp because it is prime and its reverse (74910202212011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11021220201947 - 2²⁸ = 11020951766491 is a prime.

It is not a weakly prime, because it can be changed into another prime (11021220201247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510610100973 + 5510610100974.

It is an arithmetic number, because the mean of its divisors is an integer number (5510610100974).

Almost surely, 2^{11021220201947} is an apocalyptic number.

11021220201947 is a deficient number, since it is larger than the sum of its proper divisors (1).

11021220201947 is an equidigital number, since it uses as much as digits as its factorization.

11021220201947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 32.

Adding to 11021220201947 its reverse (74910202212011), we get a palindrome (85931422413958).

The spelling of 11021220201947 in words is "eleven trillion, twenty-one billion, two hundred twenty million, two hundred one thousand, nine hundred forty-seven".