2121301222110 has 256 divisors, whose sum is σ = 6857424230400. Its totient is φ = 455532705792.

The previous prime is 2121301222031. The next prime is 2121301222141. The reversal of 2121301222110 is 112221031212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent 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, 18030556 + ... + 18147824.

It is an arithmetic number, because the mean of its divisors is an integer number (26786813400).

Almost surely, 2^{2121301222110} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2121301222110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3428712115200).

2121301222110 is an abundant number, since it is smaller than the sum of its proper divisors (4736123008290).

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

2121301222110 is a wasteful number, since it uses less digits than its factorization.

2121301222110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117872 (or 117866 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2121301222110 its reverse (112221031212), we get a palindrome (2233522253322).

The spelling of 2121301222110 in words is "two trillion, one hundred twenty-one billion, three hundred one million, two hundred twenty-two thousand, one hundred ten".