1212023150 has 48 divisors (see below), whose sum is σ = 2431615200. Its totient is φ = 446808960.

The previous prime is 1212023123. The next prime is 1212023173. The reversal of 1212023150 is 513202121.

It is a happy number.

It is a super-2 number, since 2×1212023150² = 2938000232271845000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 596336 + ... + 598364.

It is an arithmetic number, because the mean of its divisors is an integer number (50658650).

Almost surely, 2^1212023150 is an apocalyptic number.

1212023150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212023150 is an abundant number, since it is smaller than the sum of its proper divisors (1219592050).

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

1212023150 is a wasteful number, since it uses less digits than its factorization.

1212023150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2973 (or 2968 counting only the distinct ones).

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

The square root of 1212023150 is about 34814.1228526585. The cubic root of 1212023150 is about 1066.1958105193.

Adding to 1212023150 its reverse (513202121), we get a palindrome (1725225271).

The spelling of 1212023150 in words is "one billion, two hundred twelve million, twenty-three thousand, one hundred fifty".