1020021222204 has 72 divisors (see below), whose sum is σ = 2589444028080. Its totient is φ = 338550054912.

The previous prime is 1020021222173. The next prime is 1020021222257. The reversal of 1020021222204 is 4022221200201.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24895167 + ... + 24936105.

It is an arithmetic number, because the mean of its divisors is an integer number (35964500390).

Almost surely, 2^{1020021222204} is an apocalyptic number.

It is an amenable number.

1020021222204 is an abundant number, since it is smaller than the sum of its proper divisors (1569422805876).

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

1020021222204 is a wasteful number, since it uses less digits than its factorization.

1020021222204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43899 (or 43894 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 1020021222204 its reverse (4022221200201), we get a palindrome (5042242422405).

The spelling of 1020021222204 in words is "one trillion, twenty billion, twenty-one million, two hundred twenty-two thousand, two hundred four".