1023021030020 has 24 divisors (see below), whose sum is σ = 2343648178368. Its totient is φ = 372007647200.

The previous prime is 1023021030019. The next prime is 1023021030023. The reversal of 1023021030020 is 200301203201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1023021029977 and 1023021030004.

It is not an unprimeable number, because it can be changed into a prime (1023021030023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2325047576 + ... + 2325048015.

It is an arithmetic number, because the mean of its divisors is an integer number (97652007432).

Almost surely, 2^{1023021030020} is an apocalyptic number.

1023021030020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023021030020 is an abundant number, since it is smaller than the sum of its proper divisors (1320627148348).

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

1023021030020 is a wasteful number, since it uses less digits than its factorization.

1023021030020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4650095611 (or 4650095609 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 1023021030020 its reverse (200301203201), we get a palindrome (1223322233221).

The spelling of 1023021030020 in words is "one trillion, twenty-three billion, twenty-one million, thirty thousand, twenty".