1021020230100 has 72 divisors (see below), whose sum is σ = 3181394329120. Its totient is φ = 251328055680.

The previous prime is 1021020230071. The next prime is 1021020230107. The reversal of 1021020230100 is 10320201201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021020230107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 130896130 + ... + 130903929.

Almost surely, 2^{1021020230100} is an apocalyptic number.

1021020230100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021020230100 is an abundant number, since it is smaller than the sum of its proper divisors (2160374099020).

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

1021020230100 is a wasteful number, since it uses less digits than its factorization.

1021020230100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261800089 (or 261800082 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 1021020230100 its reverse (10320201201), we get a palindrome (1031340431301).

The spelling of 1021020230100 in words is "one trillion, twenty-one billion, twenty million, two hundred thirty thousand, one hundred".