154022212 has 6 divisors (see below), whose sum is σ = 269538878. Its totient is φ = 77011104.

The previous prime is 154022203. The next prime is 154022233. The reversal of 154022212 is 212220451.

It can be written as a sum of positive squares in only one way, i.e., 93431556 + 60590656 = 9666^2 + 7784^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 154022212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19252773 + ... + 19252780.

Almost surely, 2^154022212 is an apocalyptic number.

It is an amenable number.

154022212 is a deficient number, since it is larger than the sum of its proper divisors (115516666).

154022212 is a wasteful number, since it uses less digits than its factorization.

154022212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38505557 (or 38505555 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 154022212 is about 12410.5685607066. The cubic root of 154022212 is about 536.0366101451.

Adding to 154022212 its reverse (212220451), we get a palindrome (366242663).

The spelling of 154022212 in words is "one hundred fifty-four million, twenty-two thousand, two hundred twelve".