12291821034 has 16 divisors (see below), whose sum is σ = 24585949440. Its totient is φ = 4096889120.

The previous prime is 12291821027. The next prime is 12291821039. The reversal of 12291821034 is 43012819221.

It is a junction number, because it is equal to n+sod(n) for n = 12291820986 and 12291821004.

It is not an unprimeable number, because it can be changed into a prime (12291821039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22554 + ... + 158405.

It is an arithmetic number, because the mean of its divisors is an integer number (1536621840).

Almost surely, 2^12291821034 is an apocalyptic number.

12291821034 is an abundant number, since it is smaller than the sum of its proper divisors (12294128406).

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

12291821034 is a wasteful number, since it uses less digits than its factorization.

12291821034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192285.

The product of its (nonzero) digits is 6912, while the sum is 33.

The spelling of 12291821034 in words is "twelve billion, two hundred ninety-one million, eight hundred twenty-one thousand, thirty-four".