11012021200109 has 2 divisors, whose sum is σ = 11012021200110. Its totient is φ = 11012021200108.

The previous prime is 11012021200057. The next prime is 11012021200151. The reversal of 11012021200109 is 90100212021011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10939245347209 + 72775852900 = 3307453^2 + 269770^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11012021200109 is a prime.

It is a super-2 number, since 2×11012021200109² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11012021200709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5506010600054 + 5506010600055.

It is an arithmetic number, because the mean of its divisors is an integer number (5506010600055).

Almost surely, 2^{11012021200109} is an apocalyptic number.

It is an amenable number.

11012021200109 is a deficient number, since it is larger than the sum of its proper divisors (1).

11012021200109 is an equidigital number, since it uses as much as digits as its factorization.

11012021200109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 11012021200109 in words is "eleven trillion, twelve billion, twenty-one million, two hundred thousand, one hundred nine".