22002021122220 has 72 divisors (see below), whose sum is σ = 66915557850960. Its totient is φ = 5851724860800.

The previous prime is 22002021122117. The next prime is 22002021122233. The reversal of 22002021122220 is 2222112020022.

22002021122220 is a `hidden beast` number, since 220 + 0 + 202 + 1 + 1 + 22 + 220 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 22002021122193 and 22002021122202.

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 23 ways as a sum of consecutive naturals, for example, 161189631 + ... + 161326070.

It is an arithmetic number, because the mean of its divisors is an integer number (929382747930).

Almost surely, 2^{22002021122220} is an apocalyptic number.

22002021122220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22002021122220 is an abundant number, since it is smaller than the sum of its proper divisors (44913536728740).

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

22002021122220 is a wasteful number, since it uses less digits than its factorization.

22002021122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322516095 (or 322516090 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 22002021122220 its reverse (2222112020022), we get a palindrome (24224133142242).

The spelling of 22002021122220 in words is "twenty-two trillion, two billion, twenty-one million, one hundred twenty-two thousand, two hundred twenty".