351622121 has 4 divisors (see below), whose sum is σ = 355036032. Its totient is φ = 348208212.

The previous prime is 351622111. The next prime is 351622153. The reversal of 351622121 is 121226153.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-351622121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (351622111) 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 3 ways as a sum of consecutive naturals, for example, 1706801 + ... + 1707006.

It is an arithmetic number, because the mean of its divisors is an integer number (88759008).

Almost surely, 2^351622121 is an apocalyptic number.

It is an amenable number.

351622121 is a deficient number, since it is larger than the sum of its proper divisors (3413911).

351622121 is a wasteful number, since it uses less digits than its factorization.

351622121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3413910.

The product of its digits is 720, while the sum is 23.

The square root of 351622121 is about 18751.5898259321. The cubic root of 351622121 is about 705.8169166565.

Adding to 351622121 its reverse (121226153), we get a palindrome (472848274).

The spelling of 351622121 in words is "three hundred fifty-one million, six hundred twenty-two thousand, one hundred twenty-one".