221415002 has 4 divisors (see below), whose sum is σ = 332122506. Its totient is φ = 110707500.

The previous prime is 221414969. The next prime is 221415017. The reversal of 221415002 is 200514122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 200514122 = 2 ⋅100257061.

It can be written as a sum of positive squares in only one way, i.e., 207043321 + 14371681 = 14389^2 + 3791^2 .

It is a super-2 number, since 2×221415002² = 98049206221320008, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55353749 + ... + 55353752.

Almost surely, 2^221415002 is an apocalyptic number.

221415002 is a deficient number, since it is larger than the sum of its proper divisors (110707504).

221415002 is a wasteful number, since it uses less digits than its factorization.

221415002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110707503.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 221415002 is about 14880.0202284809. The cubic root of 221415002 is about 604.9725662036.

Adding to 221415002 its reverse (200514122), we get a palindrome (421929124).

The spelling of 221415002 in words is "two hundred twenty-one million, four hundred fifteen thousand, two".