1021004042200 has 96 divisors (see below), whose sum is σ = 2404485388800. Its totient is φ = 403130931840.

The previous prime is 1021004042197. The next prime is 1021004042257. The reversal of 1021004042200 is 22404001201.

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, 112602067 + ... + 112611133.

It is an arithmetic number, because the mean of its divisors is an integer number (25046722800).

Almost surely, 2^{1021004042200} is an apocalyptic number.

1021004042200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021004042200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1202242694400).

1021004042200 is an abundant number, since it is smaller than the sum of its proper divisors (1383481346600).

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

1021004042200 is a wasteful number, since it uses less digits than its factorization.

1021004042200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16289 (or 16280 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 1021004042200 its reverse (22404001201), we get a palindrome (1043408043401).

The spelling of 1021004042200 in words is "one trillion, twenty-one billion, four million, forty-two thousand, two hundred".