2100021022110 has 128 divisors (see below), whose sum is σ = 5528017870848. Its totient is φ = 506343056000.

The previous prime is 2100021022091. The next prime is 2100021022111. The reversal of 2100021022110 is 112201200012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100021022111) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 77218615 + ... + 77245805.

It is an arithmetic number, because the mean of its divisors is an integer number (43187639616).

Almost surely, 2^{2100021022110} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2100021022110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2764008935424).

2100021022110 is an abundant number, since it is smaller than the sum of its proper divisors (3427996848738).

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

2100021022110 is a wasteful number, since it uses less digits than its factorization.

2100021022110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28470.

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

Adding to 2100021022110 its reverse (112201200012), we get a palindrome (2212222222122).

The spelling of 2100021022110 in words is "two trillion, one hundred billion, twenty-one million, twenty-two thousand, one hundred ten".