153021121 has 4 divisors (see below), whose sum is σ = 166932144. Its totient is φ = 139110100.

The previous prime is 153021109. The next prime is 153021137. The reversal of 153021121 is 121120351.

153021121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 153021121 - 2¹¹ = 153019073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 153021095 and 153021104.

It is not an unprimeable number, because it can be changed into a prime (153021521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6955495 + ... + 6955516.

It is an arithmetic number, because the mean of its divisors is an integer number (41733036).

Almost surely, 2^153021121 is an apocalyptic number.

153021121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

153021121 is a deficient number, since it is larger than the sum of its proper divisors (13911023).

153021121 is a wasteful number, since it uses less digits than its factorization.

153021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13911022.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 153021121 is about 12370.1706132131. The cubic root of 153021121 is about 534.8727341620.

Adding to 153021121 its reverse (121120351), we get a palindrome (274141472).

The spelling of 153021121 in words is "one hundred fifty-three million, twenty-one thousand, one hundred twenty-one".