10121423221 has 32 divisors (see below), whose sum is σ = 12874434048. Its totient is φ = 7743375360.

The previous prime is 10121423219. The next prime is 10121423233. The reversal of 10121423221 is 12232412101.

10121423221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10121423221 - 2¹ = 10121423219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121423261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 409600 + ... + 433606.

It is an arithmetic number, because the mean of its divisors is an integer number (402326064).

Almost surely, 2^10121423221 is an apocalyptic number.

It is an amenable number.

10121423221 is a deficient number, since it is larger than the sum of its proper divisors (2753010827).

10121423221 is a wasteful number, since it uses less digits than its factorization.

10121423221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24181.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 10121423221 its reverse (12232412101), we get a palindrome (22353835322).

The spelling of 10121423221 in words is "ten billion, one hundred twenty-one million, four hundred twenty-three thousand, two hundred twenty-one".