1021123032220 has 12 divisors (see below), whose sum is σ = 2144358367704. Its totient is φ = 408449212880.

The previous prime is 1021123032199. The next prime is 1021123032227. The reversal of 1021123032220 is 222303211201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021123032227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25528075786 + ... + 25528075825.

It is an arithmetic number, because the mean of its divisors is an integer number (178696530642).

Almost surely, 2^{1021123032220} is an apocalyptic number.

1021123032220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021123032220 is an abundant number, since it is smaller than the sum of its proper divisors (1123235335484).

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

1021123032220 is a wasteful number, since it uses less digits than its factorization.

1021123032220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51056151620 (or 51056151618 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1021123032220 its reverse (222303211201), we get a palindrome (1243426243421).

The spelling of 1021123032220 in words is "one trillion, twenty-one billion, one hundred twenty-three million, thirty-two thousand, two hundred twenty".