1021200220322 has 16 divisors (see below), whose sum is σ = 1552828327512. Its totient is φ = 503591178240.

The previous prime is 1021200220307. The next prime is 1021200220357. The reversal of 1021200220322 is 2230220021201.

It can be written as a sum of positive squares in 4 ways, for example, as 364515270001 + 656684950321 = 603751^2 + 810361^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1021200220322.

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 7 ways as a sum of consecutive naturals, for example, 6510158 + ... + 6665174.

Almost surely, 2^{1021200220322} is an apocalyptic number.

1021200220322 is a deficient number, since it is larger than the sum of its proper divisors (531628107190).

1021200220322 is a wasteful number, since it uses less digits than its factorization.

1021200220322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200213.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 1021200220322 its reverse (2230220021201), we get a palindrome (3251420241523).

The spelling of 1021200220322 in words is "one trillion, twenty-one billion, two hundred million, two hundred twenty thousand, three hundred twenty-two".