152021121 has 8 divisors (see below), whose sum is σ = 231651264. Its totient is φ = 86869200.

The previous prime is 152021087. The next prime is 152021131. The reversal of 152021121 is 121120251.

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

It is not a de Polignac number, because 152021121 - 2¹⁸ = 151758977 is a prime.

It is a super-2 number, since 2×152021121² = 46220842460193282, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 152021121.

It is not an unprimeable number, because it can be changed into a prime (152021131) 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 7 ways as a sum of consecutive naturals, for example, 3619530 + ... + 3619571.

It is an arithmetic number, because the mean of its divisors is an integer number (28956408).

Almost surely, 2^152021121 is an apocalyptic number.

It is an amenable number.

152021121 is a deficient number, since it is larger than the sum of its proper divisors (79630143).

152021121 is an equidigital number, since it uses as much as digits as its factorization.

152021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7239111.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 152021121 is about 12329.6845458430. The cubic root of 152021121 is about 533.7050475957.

Adding to 152021121 its reverse (121120251), we get a palindrome (273141372).

The spelling of 152021121 in words is "one hundred fifty-two million, twenty-one thousand, one hundred twenty-one".