102204514112221 has 4 divisors (see below), whose sum is σ = 102206937153244. Its totient is φ = 102202091071200.

The previous prime is 102204514112219. The next prime is 102204514112321. The reversal of 102204514112221 is 122211415402201.

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 16155495972100 + 86049018140121 = 4019390^2 + 9276261^2 .

It is a cyclic number.

It is not a de Polignac number, because 102204514112221 - 2¹ = 102204514112219 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 102204514112221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102204514112321) 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, 1211457240 + ... + 1211541601.

It is an arithmetic number, because the mean of its divisors is an integer number (25551734288311).

Almost surely, 2^{102204514112221} is an apocalyptic number.

It is an amenable number.

102204514112221 is a deficient number, since it is larger than the sum of its proper divisors (2423041023).

102204514112221 is an equidigital number, since it uses as much as digits as its factorization.

102204514112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2423041022.

The product of its (nonzero) digits is 2560, while the sum is 28.

Adding to 102204514112221 its reverse (122211415402201), we get a palindrome (224415929514422).

The spelling of 102204514112221 in words is "one hundred two trillion, two hundred four billion, five hundred fourteen million, one hundred twelve thousand, two hundred twenty-one".