22011212032 has 18 divisors (see below), whose sum is σ = 43936443278. Its totient is φ = 11005605888.

The previous prime is 22011211987. The next prime is 22011212033. The reversal of 22011212032 is 23021211022.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19461366016 + 2549846016 = 139504^2 + 50496^2 .

It is a super-3 number, since 3×22011212032³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 22011211997 and 22011212015.

It is not an unprimeable number, because it can be changed into a prime (22011212033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42990393 + ... + 42990904.

Almost surely, 2^22011212032 is an apocalyptic number.

It is an amenable number.

22011212032 is a deficient number, since it is larger than the sum of its proper divisors (21925231246).

22011212032 is an frugal number, since it uses more digits than its factorization.

22011212032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85981313 (or 85981299 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 22011212032 its reverse (23021211022), we get a palindrome (45032423054).

The spelling of 22011212032 in words is "twenty-two billion, eleven million, two hundred twelve thousand, thirty-two".