11012020221973 has 2 divisors, whose sum is σ = 11012020221974. Its totient is φ = 11012020221972.

The previous prime is 11012020221971. The next prime is 11012020222067. The reversal of 11012020221973 is 37912202021011.

11012020221973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5741400638884 + 5270619583089 = 2396122^2 + 2295783^2 .

It is a cyclic number.

It is not a de Polignac number, because 11012020221973 - 2¹ = 11012020221971 is a prime.

Together with 11012020221971, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11012020221971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5506010110986 + 5506010110987.

It is an arithmetic number, because the mean of its divisors is an integer number (5506010110987).

Almost surely, 2^{11012020221973} is an apocalyptic number.

It is an amenable number.

11012020221973 is a deficient number, since it is larger than the sum of its proper divisors (1).

11012020221973 is an equidigital number, since it uses as much as digits as its factorization.

11012020221973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 31.

Adding to 11012020221973 its reverse (37912202021011), we get a palindrome (48924222242984).

The spelling of 11012020221973 in words is "eleven trillion, twelve billion, twenty million, two hundred twenty-one thousand, nine hundred seventy-three".