10121221101 has 8 divisors (see below), whose sum is σ = 13518597664. Its totient is φ = 6735662640.

The previous prime is 10121221049. The next prime is 10121221111. The reversal of 10121221101 is 10112212101.

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

It is not a de Polignac number, because 10121221101 - 2¹⁹ = 10120696813 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 (10121221111) 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, 2952526 + ... + 2955951.

It is an arithmetic number, because the mean of its divisors is an integer number (1689824708).

Almost surely, 2^10121221101 is an apocalyptic number.

It is an amenable number.

10121221101 is a deficient number, since it is larger than the sum of its proper divisors (3397376563).

10121221101 is an equidigital number, since it uses as much as digits as its factorization.

10121221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5909051.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 10121221101 its reverse (10112212101), we get a palindrome (20233433202).

The spelling of 10121221101 in words is "ten billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred one".