1322120003220 has 72 divisors (see below), whose sum is σ = 4118820715464. Its totient is φ = 343036539648.

The previous prime is 1322120003219. The next prime is 1322120003263. The reversal of 1322120003220 is 223000212231.

1322120003220 is a `hidden beast` number, since 1 + 322 + 1 + 20 + 0 + 0 + 322 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 385030178064 + 937089825156 = 620508^2 + 968034^2 .

It is a super-4 number, since 4×1322120003220⁴ (a number of 50 digits) contains 4444 as substring.

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 = 1322120003193 and 1322120003202.

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 23 ways as a sum of consecutive naturals, for example, 99251599 + ... + 99264918.

Almost surely, 2^{1322120003220} is an apocalyptic number.

1322120003220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1322120003220 is an abundant number, since it is smaller than the sum of its proper divisors (2796700712244).

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

1322120003220 is a wasteful number, since it uses less digits than its factorization.

1322120003220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198516569 (or 198516564 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 1322120003220 its reverse (223000212231), we get a palindrome (1545120215451).

The spelling of 1322120003220 in words is "one trillion, three hundred twenty-two billion, one hundred twenty million, three thousand, two hundred twenty".