351225121 has 8 divisors (see below), whose sum is σ = 378565544. Its totient is φ = 323930880.

The previous prime is 351225113. The next prime is 351225139. The reversal of 351225121 is 121522153.

It can be written as a sum of positive squares in 4 ways, for example, as 1123600 + 350101521 = 1060^2 + 18711^2 .

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

It is not a de Polignac number, because 351225121 - 2³ = 351225113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 351225092 and 351225101.

It is not an unprimeable number, because it can be changed into a prime (351225101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5161 + ... + 27001.

It is an arithmetic number, because the mean of its divisors is an integer number (47320693).

Almost surely, 2^351225121 is an apocalyptic number.

It is an amenable number.

351225121 is a deficient number, since it is larger than the sum of its proper divisors (27340423).

351225121 is a wasteful number, since it uses less digits than its factorization.

351225121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23091.

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

The square root of 351225121 is about 18741.0010671789. The cubic root of 351225121 is about 705.5511817265.

Adding to 351225121 its reverse (121522153), we get a palindrome (472747274).

The spelling of 351225121 in words is "three hundred fifty-one million, two hundred twenty-five thousand, one hundred twenty-one".