102222401 has 4 divisors (see below), whose sum is σ = 102356100. Its totient is φ = 102088704.

The previous prime is 102222391. The next prime is 102222409. The reversal of 102222401 is 104222201.

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 58675600 + 43546801 = 7660^2 + 6599^2 .

It is a cyclic number.

It is not a de Polignac number, because 102222401 - 2¹⁰ = 102221377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102222409) 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, 65696 + ... + 67233.

It is an arithmetic number, because the mean of its divisors is an integer number (25589025).

Almost surely, 2^102222401 is an apocalyptic number.

It is an amenable number.

102222401 is a deficient number, since it is larger than the sum of its proper divisors (133699).

102222401 is an equidigital number, since it uses as much as digits as its factorization.

102222401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133698.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 102222401 is about 10110.5094332580. The cubic root of 102222401 is about 467.5722114807.

Adding to 102222401 its reverse (104222201), we get a palindrome (206444602).

The spelling of 102222401 in words is "one hundred two million, two hundred twenty-two thousand, four hundred one".