357212123 has 4 divisors (see below), whose sum is σ = 358570608. Its totient is φ = 355853640.

The previous prime is 357212113. The next prime is 357212159. The reversal of 357212123 is 321212753.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321212753 = 241 ⋅1332833.

It is a cyclic number.

It is not a de Polignac number, because 357212123 - 2⁶ = 357212059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 357212092 and 357212101.

It is not an unprimeable number, because it can be changed into a prime (357212113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 678848 + ... + 679373.

It is an arithmetic number, because the mean of its divisors is an integer number (89642652).

Almost surely, 2^357212123 is an apocalyptic number.

357212123 is a deficient number, since it is larger than the sum of its proper divisors (1358485).

357212123 is a wasteful number, since it uses less digits than its factorization.

357212123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1358484.

The product of its digits is 2520, while the sum is 26.

The square root of 357212123 is about 18900.0561639377. The cubic root of 357212123 is about 709.5375703347.

Adding to 357212123 its reverse (321212753), we get a palindrome (678424876).

The spelling of 357212123 in words is "three hundred fifty-seven million, two hundred twelve thousand, one hundred twenty-three".