12211220434 has 32 divisors (see below), whose sum is σ = 21177040896. Its totient is φ = 5172809040.

The previous prime is 12211220393. The next prime is 12211220477. The reversal of 12211220434 is 43402211221.

It is a super-2 number, since 2×12211220434² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 469167 + ... + 494509.

It is an arithmetic number, because the mean of its divisors is an integer number (661782528).

Almost surely, 2^12211220434 is an apocalyptic number.

12211220434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12211220434 is a deficient number, since it is larger than the sum of its proper divisors (8965820462).

12211220434 is a wasteful number, since it uses less digits than its factorization.

12211220434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25750.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 12211220434 its reverse (43402211221), we get a palindrome (55613431655).

The spelling of 12211220434 in words is "twelve billion, two hundred eleven million, two hundred twenty thousand, four hundred thirty-four".