145322212 has 24 divisors (see below), whose sum is σ = 291501504. Its totient is φ = 62097312.

The previous prime is 145322173. The next prime is 145322267. The reversal of 145322212 is 212223541.

It is a happy number.

It is a super-2 number, since 2×145322212² = 42237090601145888, which contains 22 as substring.

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, 2238 + ... + 17194.

It is an arithmetic number, because the mean of its divisors is an integer number (12145896).

Almost surely, 2^145322212 is an apocalyptic number.

It is an amenable number.

145322212 is an abundant number, since it is smaller than the sum of its proper divisors (146179292).

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

145322212 is a wasteful number, since it uses less digits than its factorization.

145322212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15315 (or 15313 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 145322212 is about 12054.9662795049. The cubic root of 145322212 is about 525.7476416718.

Adding to 145322212 its reverse (212223541), we get a palindrome (357545753).

The spelling of 145322212 in words is "one hundred forty-five million, three hundred twenty-two thousand, two hundred twelve".