22002212000 has 96 divisors (see below), whose sum is σ = 54946264464. Its totient is φ = 8656512000.

The previous prime is 22002211961. The next prime is 22002212051. The reversal of 22002212000 is 21220022.

It can be written as a sum of positive squares in 8 ways, for example, as 471932176 + 21530279824 = 21724^2 + 146732^2 .

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, 198914 + ... + 289086.

Almost surely, 2^22002212000 is an apocalyptic number.

22002212000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22002212000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27473132232).

22002212000 is an abundant number, since it is smaller than the sum of its proper divisors (32944052464).

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

22002212000 is an equidigital number, since it uses as much as digits as its factorization.

22002212000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90259 (or 90241 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 22002212000 its reverse (21220022), we get a palindrome (22023432022).

The spelling of 22002212000 in words is "twenty-two billion, two million, two hundred twelve thousand".