1020221210204 has 12 divisors (see below), whose sum is σ = 2040442420464. Its totient is φ = 437237661504.

The previous prime is 1020221210167. The next prime is 1020221210207. The reversal of 1020221210204 is 4020121220201.

1020221210204 is an admirable number.

It is a super-2 number, since 2×1020221210204² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020221210207) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 18218235869 + ... + 18218235924.

It is an arithmetic number, because the mean of its divisors is an integer number (170036868372).

Almost surely, 2^{1020221210204} is an apocalyptic number.

1020221210204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1020221210204 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1020221210204 is a wasteful number, since it uses less digits than its factorization.

1020221210204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36436471804 (or 36436471802 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1020221210204 its reverse (4020121220201), we get a palindrome (5040342430405).

The spelling of 1020221210204 in words is "one trillion, twenty billion, two hundred twenty-one million, two hundred ten thousand, two hundred four".