1020100200120 has 96 divisors (see below), whose sum is σ = 3315986902800. Its totient is φ = 271972463616.

The previous prime is 1020100200113. The next prime is 1020100200137. The reversal of 1020100200120 is 210020010201.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1541184 + ... + 2101296.

Almost surely, 2^{1020100200120} is an apocalyptic number.

1020100200120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020100200120 is an abundant number, since it is smaller than the sum of its proper divisors (2295886702680).

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

1020100200120 is a wasteful number, since it uses less digits than its factorization.

1020100200120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565189 (or 565182 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1020100200120 its reverse (210020010201), we get a palindrome (1230120210321).

The spelling of 1020100200120 in words is "one trillion, twenty billion, one hundred million, two hundred thousand, one hundred twenty".