102221021220001 has 4 divisors (see below), whose sum is σ = 102221043359812. Its totient is φ = 102220999080192.

The previous prime is 102221021219983. The next prime is 102221021220049. The reversal of 102221021220001 is 100022120122201.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 92857121337600 + 9363899882401 = 9636240^2 + 3060049^2 .

It is a cyclic number.

It is not a de Polignac number, because 102221021220001 - 2²³ = 102221012831393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102221021226001) 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, 1227000 + ... + 14350873.

It is an arithmetic number, because the mean of its divisors is an integer number (25555260839953).

Almost surely, 2^{102221021220001} is an apocalyptic number.

It is an amenable number.

102221021220001 is a deficient number, since it is larger than the sum of its proper divisors (22139811).

102221021220001 is an equidigital number, since it uses as much as digits as its factorization.

102221021220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22139810.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 102221021220001 its reverse (100022120122201), we get a palindrome (202243141342202).

The spelling of 102221021220001 in words is "one hundred two trillion, two hundred twenty-one billion, twenty-one million, two hundred twenty thousand, one".