102226821811 has 4 divisors (see below), whose sum is σ = 102249629512. Its totient is φ = 102204014112.

The previous prime is 102226821799. The next prime is 102226821857. The reversal of 102226821811 is 118128622201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 118128622201 = 379 ⋅311685019.

It is a cyclic number.

It is not a de Polignac number, because 102226821811 - 2¹⁵ = 102226789043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102226821881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11397126 + ... + 11406091.

It is an arithmetic number, because the mean of its divisors is an integer number (25562407378).

Almost surely, 2^102226821811 is an apocalyptic number.

102226821811 is a deficient number, since it is larger than the sum of its proper divisors (22807701).

102226821811 is an equidigital number, since it uses as much as digits as its factorization.

102226821811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22807700.

The product of its (nonzero) digits is 6144, while the sum is 34.

The spelling of 102226821811 in words is "one hundred two billion, two hundred twenty-six million, eight hundred twenty-one thousand, eight hundred eleven".