351121225 has 24 divisors (see below), whose sum is σ = 535868480. Its totient is φ = 222246720.

The previous prime is 351121223. The next prime is 351121229. The reversal of 351121225 is 522121153.

It is not a de Polignac number, because 351121225 - 2¹ = 351121223 is a prime.

It is a super-2 number, since 2×351121225² = 246572229291001250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 351121196 and 351121205.

It is not an unprimeable number, because it can be changed into a prime (351121223) 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 23 ways as a sum of consecutive naturals, for example, 74895 + ... + 79444.

Almost surely, 2^351121225 is an apocalyptic number.

351121225 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

351121225 is a deficient number, since it is larger than the sum of its proper divisors (184747255).

351121225 is a wasteful number, since it uses less digits than its factorization.

351121225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154369 (or 154364 counting only the distinct ones).

The product of its digits is 600, while the sum is 22.

The square root of 351121225 is about 18738.2289718105. The cubic root of 351121225 is about 705.4816051023.

Adding to 351121225 its reverse (522121153), we get a palindrome (873242378).

The spelling of 351121225 in words is "three hundred fifty-one million, one hundred twenty-one thousand, two hundred twenty-five".