2100021210060 has 96 divisors (see below), whose sum is σ = 5928123801600. Its totient is φ = 555432683520.

The previous prime is 2100021209971. The next prime is 2100021210061. The reversal of 2100021210060 is 600121200012.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (2100021210061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14776821 + ... + 14918259.

It is an arithmetic number, because the mean of its divisors is an integer number (61751289600).

Almost surely, 2^{2100021210060} is an apocalyptic number.

2100021210060 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 2100021210060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2964061900800).

2100021210060 is an abundant number, since it is smaller than the sum of its proper divisors (3828102591540).

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

2100021210060 is a wasteful number, since it uses less digits than its factorization.

2100021210060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143471 (or 143469 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 2100021210060 its reverse (600121200012), we get a palindrome (2700142410072).

The spelling of 2100021210060 in words is "two trillion, one hundred billion, twenty-one million, two hundred ten thousand, sixty".