10121121210221 has 8 divisors (see below), whose sum is σ = 11625121276800. Its totient is φ = 8631652545648.

The previous prime is 10121121210181. The next prime is 10121121210229. The reversal of 10121121210221 is 12201212112101.

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 10121121210221 - 2⁶ = 10121121210157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10121121210221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121121210229) 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, 3632849006 + ... + 3632851791.

It is an arithmetic number, because the mean of its divisors is an integer number (1453140159600).

Almost surely, 2^{10121121210221} is an apocalyptic number.

It is an amenable number.

10121121210221 is a deficient number, since it is larger than the sum of its proper divisors (1504000066579).

10121121210221 is an equidigital number, since it uses as much as digits as its factorization.

10121121210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7265701003.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 10121121210221 its reverse (12201212112101), we get a palindrome (22322333322322).

The spelling of 10121121210221 in words is "ten trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred ten thousand, two hundred twenty-one".