2221020222120 has 288 divisors, whose sum is σ = 8763316473600. Its totient is φ = 477799151616.

The previous prime is 2221020222101. The next prime is 2221020222151. The reversal of 2221020222120 is 212220201222.

2221020222120 is a `hidden beast` number, since 2 + 221 + 0 + 202 + 221 + 20 = 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 = 2221020222093 and 2221020222102.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 796560 + ... + 2253119.

It is an arithmetic number, because the mean of its divisors is an integer number (30428182200).

Almost surely, 2^{2221020222120} is an apocalyptic number.

2221020222120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221020222120 is an abundant number, since it is smaller than the sum of its proper divisors (6542296251480).

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

2221020222120 is a wasteful number, since it uses less digits than its factorization.

2221020222120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3049737 (or 3049713 counting only the distinct ones).

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

Adding to 2221020222120 its reverse (212220201222), we get a palindrome (2433240423342).

The spelling of 2221020222120 in words is "two trillion, two hundred twenty-one billion, twenty million, two hundred twenty-two thousand, one hundred twenty".