1212149033 has 4 divisors (see below), whose sum is σ = 1213351380. Its totient is φ = 1210946688.

The previous prime is 1212149021. The next prime is 1212149039. The reversal of 1212149033 is 3309412121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 931653529 + 280495504 = 30523^2 + 16748^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212149033 - 2¹⁶ = 1212083497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1212148993 and 1212149011.

It is not an unprimeable number, because it can be changed into a prime (1212149039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 599660 + ... + 601677.

It is an arithmetic number, because the mean of its divisors is an integer number (303337845).

Almost surely, 2^1212149033 is an apocalyptic number.

It is an amenable number.

1212149033 is a deficient number, since it is larger than the sum of its proper divisors (1202347).

1212149033 is a wasteful number, since it uses less digits than its factorization.

1212149033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202346.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1212149033 is about 34815.9307357997. The cubic root of 1212149033 is about 1066.2327216077.

The spelling of 1212149033 in words is "one billion, two hundred twelve million, one hundred forty-nine thousand, thirty-three".