22021011222210 has 768 divisors, whose sum is σ = 80355589816320. Its totient is φ = 4218379845120.

The previous prime is 22021011222209. The next prime is 22021011222247. The reversal of 22021011222210 is 1222211012022.

It is a happy number.

22021011222210 is a `hidden beast` number, since 2 + 20 + 210 + 1 + 1 + 222 + 210 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 1557018399 + ... + 1557032541.

It is an arithmetic number, because the mean of its divisors is an integer number (104629674240).

Almost surely, 2^{22021011222210} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22021011222210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40177794908160).

22021011222210 is an abundant number, since it is smaller than the sum of its proper divisors (58334578594110).

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

22021011222210 is a wasteful number, since it uses less digits than its factorization.

22021011222210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15020 (or 15007 counting only the distinct ones).

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

Adding to 22021011222210 its reverse (1222211012022), we get a palindrome (23243222234232).

The spelling of 22021011222210 in words is "twenty-two trillion, twenty-one billion, eleven million, two hundred twenty-two thousand, two hundred ten".