1021200222032 has 40 divisors (see below), whose sum is σ = 2095030648296. Its totient is φ = 480549113856.

The previous prime is 1021200222017. The next prime is 1021200222079. The reversal of 1021200222032 is 2302220021201.

It can be written as a sum of positive squares in 4 ways, for example, as 902089646656 + 119110575376 = 949784^2 + 345124^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 1021200222032.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 16030628 + ... + 16094204.

Almost surely, 2^{1021200222032} is an apocalyptic number.

It is an amenable number.

1021200222032 is an abundant number, since it is smaller than the sum of its proper divisors (1073830426264).

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

1021200222032 is a wasteful number, since it uses less digits than its factorization.

1021200222032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122655 (or 122649 counting only the distinct ones).

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

Adding to 1021200222032 its reverse (2302220021201), we get a palindrome (3323420243233).

The spelling of 1021200222032 in words is "one trillion, twenty-one billion, two hundred million, two hundred twenty-two thousand, thirty-two".