345121212 has 24 divisors (see below), whose sum is σ = 806786512. Its totient is φ = 114825600.

The previous prime is 345121201. The next prime is 345121223. The reversal of 345121212 is 212121543.

It is an interprime number because it is at equal distance from previous prime (345121201) and next prime (345121223).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20089 + ... + 33072.

Almost surely, 2^345121212 is an apocalyptic number.

It is an amenable number.

345121212 is an abundant number, since it is smaller than the sum of its proper divisors (461665300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

345121212 is a wasteful number, since it uses less digits than its factorization.

345121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53709 (or 53707 counting only the distinct ones).

The product of its digits is 480, while the sum is 21.

The square root of 345121212 is about 18577.4382518150. The cubic root of 345121212 is about 701.4400368916.

Adding to 345121212 its reverse (212121543), we get a palindrome (557242755).

The spelling of 345121212 in words is "three hundred forty-five million, one hundred twenty-one thousand, two hundred twelve".