15020121 has 16 divisors (see below), whose sum is σ = 20487168. Its totient is φ = 9786000.

The previous prime is 15020107. The next prime is 15020123. The reversal of 15020121 is 12102051.

It is not a de Polignac number, because 15020121 - 2¹³ = 15011929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15020097 and 15020106.

It is not an unprimeable number, because it can be changed into a prime (15020123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31930 + ... + 32396.

It is an arithmetic number, because the mean of its divisors is an integer number (1280448).

Almost surely, 2^15020121 is an apocalyptic number.

It is an amenable number.

15020121 is a deficient number, since it is larger than the sum of its proper divisors (5467047).

15020121 is a wasteful number, since it uses less digits than its factorization.

15020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 15020121 is about 3875.5800856130. The cubic root of 15020121 is about 246.7314307258.

Adding to 15020121 its reverse (12102051), we get a palindrome (27122172).

The spelling of 15020121 in words is "fifteen million, twenty thousand, one hundred twenty-one".