145121212 has 6 divisors (see below), whose sum is σ = 253962128. Its totient is φ = 72560604.

The previous prime is 145121209. The next prime is 145121243. The reversal of 145121212 is 212121541.

It is a self number, because there is not a number n which added to its sum of digits gives 145121212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18140148 + ... + 18140155.

Almost surely, 2^145121212 is an apocalyptic number.

It is an amenable number.

145121212 is a deficient number, since it is larger than the sum of its proper divisors (108840916).

145121212 is a wasteful number, since it uses less digits than its factorization.

145121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36280307 (or 36280305 counting only the distinct ones).

The product of its digits is 160, while the sum is 19.

The square root of 145121212 is about 12046.6265817448. The cubic root of 145121212 is about 525.5051367971.

Adding to 145121212 its reverse (212121541), we get a palindrome (357242753).

The spelling of 145121212 in words is "one hundred forty-five million, one hundred twenty-one thousand, two hundred twelve".