1021430244220 has 12 divisors (see below), whose sum is σ = 2145003512904. Its totient is φ = 408572097680.

The previous prime is 1021430244209. The next prime is 1021430244287. The reversal of 1021430244220 is 224420341201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25535756086 + ... + 25535756125.

It is an arithmetic number, because the mean of its divisors is an integer number (178750292742).

Almost surely, 2^{1021430244220} is an apocalyptic number.

1021430244220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021430244220 is an abundant number, since it is smaller than the sum of its proper divisors (1123573268684).

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

1021430244220 is a wasteful number, since it uses less digits than its factorization.

1021430244220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51071512220 (or 51071512218 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 1021430244220 its reverse (224420341201), we get a palindrome (1245850585421).

The spelling of 1021430244220 in words is "one trillion, twenty-one billion, four hundred thirty million, two hundred forty-four thousand, two hundred twenty".