102122122221011 has 4 divisors (see below), whose sum is σ = 102294334906632. Its totient is φ = 101949909535392.

The previous prime is 102122122220981. The next prime is 102122122221019. The reversal of 102122122221011 is 110122221221201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102122122221011 - 2¹⁰ = 102122122219987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102122122221019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86106341921 + ... + 86106343106.

It is an arithmetic number, because the mean of its divisors is an integer number (25573583726658).

Almost surely, 2^{102122122221011} is an apocalyptic number.

102122122221011 is a deficient number, since it is larger than the sum of its proper divisors (172212685621).

102122122221011 is an equidigital number, since it uses as much as digits as its factorization.

102122122221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172212685620.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 102122122221011 its reverse (110122221221201), we get a palindrome (212244343442212).

The spelling of 102122122221011 in words is "one hundred two trillion, one hundred twenty-two billion, one hundred twenty-two million, two hundred twenty-one thousand, eleven".