221212202222002 has 8 divisors (see below), whose sum is σ = 331938833055516. Its totient is φ = 110565924536832.

The previous prime is 221212202221993. The next prime is 221212202222029. The reversal of 221212202222002 is 200222202212122.

It can be written as a sum of positive squares in 2 ways, for example, as 212087930171121 + 9124272050881 = 14563239^2 + 3020641^2 .

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

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, 20088280203 + ... + 20088291214.

Almost surely, 2^{221212202222002} is an apocalyptic number.

221212202222002 is a deficient number, since it is larger than the sum of its proper divisors (110726630833514).

221212202222002 is a wasteful number, since it uses less digits than its factorization.

221212202222002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40176574172.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 221212202222002 its reverse (200222202212122), we get a palindrome (421434404434124).

The spelling of 221212202222002 in words is "two hundred twenty-one trillion, two hundred twelve billion, two hundred two million, two hundred twenty-two thousand, two".