221300121331012 has 48 divisors (see below), whose sum is σ = 394306376426032. Its totient is φ = 108647526113280.

The previous prime is 221300121330943. The next prime is 221300121331033. The reversal of 221300121331012 is 210133121003122.

It can be written as a sum of positive squares in 8 ways, for example, as 49613766039616 + 171686355291396 = 7043704^2 + 13102914^2 .

It is a super-2 number, since 2×221300121331012² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 671955088 + ... + 672284344.

Almost surely, 2^{221300121331012} is an apocalyptic number.

It is an amenable number.

221300121331012 is a deficient number, since it is larger than the sum of its proper divisors (173006255095020).

221300121331012 is a wasteful number, since it uses less digits than its factorization.

221300121331012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334088 (or 334086 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 221300121331012 its reverse (210133121003122), we get a palindrome (431433242334134).

The spelling of 221300121331012 in words is "two hundred twenty-one trillion, three hundred billion, one hundred twenty-one million, three hundred thirty-one thousand, twelve".