1211512150323 has 12 divisors (see below), whose sum is σ = 1774609347888. Its totient is φ = 796299065520.

The previous prime is 1211512150297. The next prime is 1211512150339. The reversal of 1211512150323 is 3230512151121.

1211512150323 is a `hidden beast` number, since 1 + 2 + 1 + 15 + 121 + 503 + 23 = 666.

It is not a de Polignac number, because 1211512150323 - 2⁸ = 1211512150067 is a prime.

It is a super-3 number, since 3×1211512150323³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1211512150393) 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 11 ways as a sum of consecutive naturals, for example, 947974440 + ... + 947975717.

It is an arithmetic number, because the mean of its divisors is an integer number (147884112324).

Almost surely, 2^{1211512150323} is an apocalyptic number.

1211512150323 is a deficient number, since it is larger than the sum of its proper divisors (563097197565).

1211512150323 is a wasteful number, since it uses less digits than its factorization.

1211512150323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1895950234 (or 1895950231 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The spelling of 1211512150323 in words is "one trillion, two hundred eleven billion, five hundred twelve million, one hundred fifty thousand, three hundred twenty-three".