10221211112221 has 8 divisors (see below), whose sum is σ = 10555851106304. Its totient is φ = 9886878837360.

The previous prime is 10221211112183. The next prime is 10221211112237. The reversal of 10221211112221 is 12221111212201.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 10221211112221 - 2¹³ = 10221211104029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221211112291) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 76862286 + ... + 76995151.

It is an arithmetic number, because the mean of its divisors is an integer number (1319481388288).

Almost surely, 2^{10221211112221} is an apocalyptic number.

It is an amenable number.

10221211112221 is a deficient number, since it is larger than the sum of its proper divisors (334639994083).

10221211112221 is a wasteful number, since it uses less digits than its factorization.

10221211112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153859611.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 10221211112221 its reverse (12221111212201), we get a palindrome (22442322324422).

The spelling of 10221211112221 in words is "ten trillion, two hundred twenty-one billion, two hundred eleven million, one hundred twelve thousand, two hundred twenty-one".