1021021230020 has 24 divisors (see below), whose sum is σ = 2339066818368. Its totient is φ = 371280447200.

The previous prime is 1021021230017. The next prime is 1021021230059. The reversal of 1021021230020 is 200321201201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1021021229977 and 1021021230004.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2320502576 + ... + 2320503015.

It is an arithmetic number, because the mean of its divisors is an integer number (97461117432).

Almost surely, 2^{1021021230020} is an apocalyptic number.

1021021230020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021021230020 is an abundant number, since it is smaller than the sum of its proper divisors (1318045588348).

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

1021021230020 is a wasteful number, since it uses less digits than its factorization.

1021021230020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4641005611 (or 4641005609 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 1021021230020 its reverse (200321201201), we get a palindrome (1221342431221).

The spelling of 1021021230020 in words is "one trillion, twenty-one billion, twenty-one million, two hundred thirty thousand, twenty".