22001213234 has 32 divisors (see below), whose sum is σ = 44310139776. Its totient is φ = 7912523520.

The previous prime is 22001213231. The next prime is 22001213251. The reversal of 22001213234 is 43231210022.

It is not an unprimeable number, because it can be changed into a prime (22001213231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5492807 + ... + 5496810.

It is an arithmetic number, because the mean of its divisors is an integer number (1384691868).

Almost surely, 2^22001213234 is an apocalyptic number.

22001213234 is an abundant number, since it is smaller than the sum of its proper divisors (22308926542).

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

22001213234 is a wasteful number, since it uses less digits than its factorization.

22001213234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10989650.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 22001213234 its reverse (43231210022), we get a palindrome (65232423256).

The spelling of 22001213234 in words is "twenty-two billion, one million, two hundred thirteen thousand, two hundred thirty-four".