102221012011 has 4 divisors (see below), whose sum is σ = 102222492192. Its totient is φ = 102219531832.

The previous prime is 102221011987. The next prime is 102221012017. The reversal of 102221012011 is 110210122201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110210122201 = 41 ⋅2688051761.

It is a cyclic number.

It is not a de Polignac number, because 102221012011 - 2⁵ = 102221011979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102221011982 and 102221012000.

It is not an unprimeable number, because it can be changed into a prime (102221012017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 631156 + ... + 776401.

It is an arithmetic number, because the mean of its divisors is an integer number (25555623048).

Almost surely, 2^102221012011 is an apocalyptic number.

102221012011 is a deficient number, since it is larger than the sum of its proper divisors (1480181).

102221012011 is an equidigital number, since it uses as much as digits as its factorization.

102221012011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1480180.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 102221012011 its reverse (110210122201), we get a palindrome (212431134212).

The spelling of 102221012011 in words is "one hundred two billion, two hundred twenty-one million, twelve thousand, eleven".