152213121 has 24 divisors (see below), whose sum is σ = 239558240. Its totient is φ = 95501376.

The previous prime is 152213111. The next prime is 152213129. The reversal of 152213121 is 121312251.

It is not a de Polignac number, because 152213121 - 2⁷ = 152212993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 152213094 and 152213103.

It is not an unprimeable number, because it can be changed into a prime (152213129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1951 + ... + 17556.

Almost surely, 2^152213121 is an apocalyptic number.

It is an amenable number.

152213121 is a deficient number, since it is larger than the sum of its proper divisors (87345119).

152213121 is a wasteful number, since it uses less digits than its factorization.

152213121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19550 (or 19527 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 152213121 is about 12337.4681762507. The cubic root of 152213121 is about 533.9296397639.

Adding to 152213121 its reverse (121312251), we get a palindrome (273525372).

The spelling of 152213121 in words is "one hundred fifty-two million, two hundred thirteen thousand, one hundred twenty-one".