1000002102120 has 384 divisors, whose sum is σ = 3815918346240. Its totient is φ = 222360768000.

The previous prime is 1000002102019. The next prime is 1000002102167. The reversal of 1000002102120 is 212012000001.

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

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

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, 27179977 + ... + 27216743.

It is an arithmetic number, because the mean of its divisors is an integer number (9937287360).

Almost surely, 2^{1000002102120} is an apocalyptic number.

1000002102120 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 1000002102120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1907959173120).

1000002102120 is an abundant number, since it is smaller than the sum of its proper divisors (2815916244120).

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

1000002102120 is a wasteful number, since it uses less digits than its factorization.

1000002102120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37085 (or 37078 counting only the distinct ones).

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

Adding to 1000002102120 its reverse (212012000001), we get a palindrome (1212014102121).

The spelling of 1000002102120 in words is "one trillion, two million, one hundred two thousand, one hundred twenty".