357220121 has 8 divisors (see below), whose sum is σ = 376272000. Its totient is φ = 338193360.

The previous prime is 357220117. The next prime is 357220147. The reversal of 357220121 is 121022753.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 357220121 - 2² = 357220117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (357220151) 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, 27680 + ... + 38478.

It is an arithmetic number, because the mean of its divisors is an integer number (47034000).

Almost surely, 2^357220121 is an apocalyptic number.

It is an amenable number.

357220121 is a deficient number, since it is larger than the sum of its proper divisors (19051879).

357220121 is a wasteful number, since it uses less digits than its factorization.

357220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12559.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 357220121 is about 18900.2677494262. The cubic root of 357220121 is about 709.5428658242.

Adding to 357220121 its reverse (121022753), we get a palindrome (478242874).

The spelling of 357220121 in words is "three hundred fifty-seven million, two hundred twenty thousand, one hundred twenty-one".