2021021100210 has 256 divisors, whose sum is σ = 6182549544960. Its totient is φ = 411612917760.

The previous prime is 2021021100199. The next prime is 2021021100257. The reversal of 2021021100210 is 120011201202.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 108993540 + ... + 109012080.

It is an arithmetic number, because the mean of its divisors is an integer number (24150584160).

Almost surely, 2^{2021021100210} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2021021100210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3091274772480).

2021021100210 is an abundant number, since it is smaller than the sum of its proper divisors (4161528444750).

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

2021021100210 is a wasteful number, since it uses less digits than its factorization.

2021021100210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20201.

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

Adding to 2021021100210 its reverse (120011201202), we get a palindrome (2141032301412).

The spelling of 2021021100210 in words is "two trillion, twenty-one billion, twenty-one million, one hundred thousand, two hundred ten".