102220001121221 has 4 divisors (see below), whose sum is σ = 103659719446944. Its totient is φ = 100780282795500.

The previous prime is 102220001121197. The next prime is 102220001121263. The reversal of 102220001121221 is 122121100022201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102220001121221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102220001121221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102220001124221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 719859162755 + ... + 719859162896.

It is an arithmetic number, because the mean of its divisors is an integer number (25914929861736).

Almost surely, 2^{102220001121221} is an apocalyptic number.

It is an amenable number.

102220001121221 is a deficient number, since it is larger than the sum of its proper divisors (1439718325723).

102220001121221 is an equidigital number, since it uses as much as digits as its factorization.

102220001121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439718325722.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 102220001121221 its reverse (122121100022201), we get a palindrome (224341101143422).

The spelling of 102220001121221 in words is "one hundred two trillion, two hundred twenty billion, one million, one hundred twenty-one thousand, two hundred twenty-one".