1012321022020 has 48 divisors (see below), whose sum is σ = 2650440498048. Its totient is φ = 315528629760.

The previous prime is 1012321021997. The next prime is 1012321022039. The reversal of 1012321022020 is 202201232101.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1012321021985 and 1012321022003.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328674117 + ... + 328677196.

It is an arithmetic number, because the mean of its divisors is an integer number (55217510376).

Almost surely, 2^{1012321022020} is an apocalyptic number.

1012321022020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012321022020 is an abundant number, since it is smaller than the sum of its proper divisors (1638119476028).

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

1012321022020 is a wasteful number, since it uses less digits than its factorization.

1012321022020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657351340 (or 657351338 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1012321022020 its reverse (202201232101), we get a palindrome (1214522254121).

The spelling of 1012321022020 in words is "one trillion, twelve billion, three hundred twenty-one million, twenty-two thousand, twenty".