10221312221012 has 12 divisors (see below), whose sum is σ = 17887602661236. Its totient is φ = 5110568603520.

The previous prime is 10221312220997. The next prime is 10221312221017. The reversal of 10221312221012 is 21012221312201.

It can be written as a sum of positive squares in 2 ways, for example, as 5738496906256 + 4482815314756 = 2395516^2 + 2117266^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221312221017) 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, 21613583 + ... + 22081430.

It is an arithmetic number, because the mean of its divisors is an integer number (1490633555103).

Almost surely, 2^{10221312221012} is an apocalyptic number.

It is an amenable number.

10221312221012 is a deficient number, since it is larger than the sum of its proper divisors (7666290440224).

10221312221012 is a wasteful number, since it uses less digits than its factorization.

10221312221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43753498 (or 43753496 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 10221312221012 its reverse (21012221312201), we get a palindrome (31233533533213).

The spelling of 10221312221012 in words is "ten trillion, two hundred twenty-one billion, three hundred twelve million, two hundred twenty-one thousand, twelve".