1212320150 has 48 divisors (see below), whose sum is σ = 2391837984. Its totient is φ = 455585280.

The previous prime is 1212320129. The next prime is 1212320159. The reversal of 1212320150 is 510232121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212320159) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 698684 + ... + 700416.

It is an arithmetic number, because the mean of its divisors is an integer number (49829958).

Almost surely, 2^1212320150 is an apocalyptic number.

1212320150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212320150 is a deficient number, since it is larger than the sum of its proper divisors (1179517834).

1212320150 is a wasteful number, since it uses less digits than its factorization.

1212320150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2585 (or 2580 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1212320150 is about 34818.3881016913. The cubic root of 1212320150 is about 1066.2828919952.

Adding to 1212320150 its reverse (510232121), we get a palindrome (1722552271).

The spelling of 1212320150 in words is "one billion, two hundred twelve million, three hundred twenty thousand, one hundred fifty".