1020203102100 has 288 divisors, whose sum is σ = 3635218886656. Its totient is φ = 215118374400.

The previous prime is 1020203102063. The next prime is 1020203102119. The reversal of 1020203102100 is 12013020201.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 47682405 + ... + 47703795.

Almost surely, 2^{1020203102100} is an apocalyptic number.

1020203102100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1020203102100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1817609443328).

1020203102100 is an abundant number, since it is smaller than the sum of its proper divisors (2615015784556).

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

1020203102100 is a wasteful number, since it uses less digits than its factorization.

1020203102100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23175 (or 23168 counting only the distinct ones).

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

Adding to 1020203102100 its reverse (12013020201), we get a palindrome (1032216122301).

The spelling of 1020203102100 in words is "one trillion, twenty billion, two hundred three million, one hundred two thousand, one hundred".