221221313302 has 8 divisors (see below), whose sum is σ = 361998512712. Its totient is φ = 100555142400.

The previous prime is 221221313251. The next prime is 221221313329. The reversal of 221221313302 is 203313122122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 10055514241 = 221221313302 / (2 + 2 + 1 + 2 + 2 + 1 + 3 + 1 + 3 + 3 + 0 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5027757099 + ... + 5027757142.

It is an arithmetic number, because the mean of its divisors is an integer number (45249814089).

Almost surely, 2^221221313302 is an apocalyptic number.

221221313302 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221221313302 is a deficient number, since it is larger than the sum of its proper divisors (140777199410).

221221313302 is a wasteful number, since it uses less digits than its factorization.

221221313302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10055514254.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 221221313302 its reverse (203313122122), we get a palindrome (424534435424).

The spelling of 221221313302 in words is "two hundred twenty-one billion, two hundred twenty-one million, three hundred thirteen thousand, three hundred two".