1322121202020 has 72 divisors (see below), whose sum is σ = 4118824450104. Its totient is φ = 343036850688.

The previous prime is 1322121202009. The next prime is 1322121202049. The reversal of 1322121202020 is 202021212231.

1322121202020 is a `hidden beast` number, since 1 + 322 + 121 + 20 + 202 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 335929204836 + 986191997184 = 579594^2 + 993072^2 .

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 = 1322121201984 and 1322121202002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99251689 + ... + 99265008.

Almost surely, 2^{1322121202020} is an apocalyptic number.

1322121202020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1322121202020 is an abundant number, since it is smaller than the sum of its proper divisors (2796703248084).

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

1322121202020 is a wasteful number, since it uses less digits than its factorization.

1322121202020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198516749 (or 198516744 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1322121202020 its reverse (202021212231), we get a palindrome (1524142414251).

The spelling of 1322121202020 in words is "one trillion, three hundred twenty-two billion, one hundred twenty-one million, two hundred two thousand, twenty".