221301002 has 48 divisors (see below), whose sum is σ = 391869576. Its totient is φ = 92851200.

The previous prime is 221300987. The next prime is 221301007. The reversal of 221301002 is 200103122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 160757041 + 60543961 = 12679^2 + 7781^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221301007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 424502 + ... + 425022.

Almost surely, 2^221301002 is an apocalyptic number.

221301002 is a deficient number, since it is larger than the sum of its proper divisors (170568574).

221301002 is a wasteful number, since it uses less digits than its factorization.

221301002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615 (or 584 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 221301002 is about 14876.1890953295. The cubic root of 221301002 is about 604.8687209181.

Adding to 221301002 its reverse (200103122), we get a palindrome (421404124).

It can be divided in two parts, 22130 and 1002, that added together give a palindrome (23132).

The spelling of 221301002 in words is "two hundred twenty-one million, three hundred one thousand, two".