22011202221210 has 96 divisors (see below), whose sum is σ = 59436262613520. Its totient is φ = 5646845850624.

The previous prime is 22011202221187. The next prime is 22011202221257. The reversal of 22011202221210 is 1212220211022.

It is a happy number.

22011202221210 is a `hidden beast` number, since 2 + 20 + 11 + 202 + 221 + 210 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 11010497694849 + 11000704526361 = 3318207^2 + 3316731^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36838297 + ... + 37431036.

Almost surely, 2^{22011202221210} is an apocalyptic number.

22011202221210 is an abundant number, since it is smaller than the sum of its proper divisors (37425060392310).

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

22011202221210 is a wasteful number, since it uses less digits than its factorization.

22011202221210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74269472 (or 74269469 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22011202221210 its reverse (1212220211022), we get a palindrome (23223422432232).

The spelling of 22011202221210 in words is "twenty-two trillion, eleven billion, two hundred two million, two hundred twenty-one thousand, two hundred ten".