221012221200002 has 8 divisors (see below), whose sum is σ = 337773394664316. Its totient is φ = 108421089645232.

The previous prime is 221012221199977. The next prime is 221012221200007. The reversal of 221012221200002 is 200002122210122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 218242090374361 + 2770130825641 = 14773019^2 + 1664371^2 .

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

It is a super-2 number, since 2×221012221200002² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221012221200007) 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, 1042510477253 + ... + 1042510477464.

Almost surely, 2^{221012221200002} is an apocalyptic number.

221012221200002 is a deficient number, since it is larger than the sum of its proper divisors (116761173464314).

221012221200002 is a wasteful number, since it uses less digits than its factorization.

221012221200002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2085020954772.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221012221200002 its reverse (200002122210122), we get a palindrome (421014343410124).

The spelling of 221012221200002 in words is "two hundred twenty-one trillion, twelve billion, two hundred twenty-one million, two hundred thousand, two".