2120210120100 has 144 divisors (see below), whose sum is σ = 6429900460032. Its totient is φ = 538381683840.

The previous prime is 2120210120059. The next prime is 2120210120117. The reversal of 2120210120100 is 10210120212.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 849739 + ... + 2227661.

It is an arithmetic number, because the mean of its divisors is an integer number (44652086528).

Almost surely, 2^{2120210120100} is an apocalyptic number.

2120210120100 is a gapful number since it is divisible by the number (20) 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 2120210120100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3214950230016).

2120210120100 is an abundant number, since it is smaller than the sum of its proper divisors (4309690339932).

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

2120210120100 is a wasteful number, since it uses less digits than its factorization.

2120210120100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378186 (or 1378179 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2120210120100 its reverse (10210120212), we get a palindrome (2130420240312).

The spelling of 2120210120100 in words is "two trillion, one hundred twenty billion, two hundred ten million, one hundred twenty thousand, one hundred".