10221221211 has 8 divisors (see below), whose sum is σ = 13629670464. Its totient is φ = 6813459720.

The previous prime is 10221221201. The next prime is 10221221233. The reversal of 10221221211 is 11212212201.

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

It is not a de Polignac number, because 10221221211 - 2⁶ = 10221221147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10221221201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136201 + ... + 197466.

It is an arithmetic number, because the mean of its divisors is an integer number (1703708808).

Almost surely, 2^10221221211 is an apocalyptic number.

10221221211 is a deficient number, since it is larger than the sum of its proper divisors (3408449253).

10221221211 is a wasteful number, since it uses less digits than its factorization.

10221221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343881.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 10221221211 its reverse (11212212201), we get a palindrome (21433433412).

The spelling of 10221221211 in words is "ten billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred eleven".