221022221222000 has 160 divisors (see below), whose sum is σ = 592574083777728. Its totient is φ = 79054147200000.

The previous prime is 221022221221937. The next prime is 221022221222059. The reversal of 221022221222000 is 222122220122.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 81006071 + ... + 83690070.

Almost surely, 2^{221022221222000} is an apocalyptic number.

221022221222000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221022221222000 is an abundant number, since it is smaller than the sum of its proper divisors (371551862555728).

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

221022221222000 is a wasteful number, since it uses less digits than its factorization.

221022221222000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164696236 (or 164696220 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 221022221222000 its reverse (222122220122), we get a palindrome (221244343442122).

The spelling of 221022221222000 in words is "two hundred twenty-one trillion, twenty-two billion, two hundred twenty-one million, two hundred twenty-two thousand".