2121022201110 has 256 divisors, whose sum is σ = 5823161487360. Its totient is φ = 491210424320.

The previous prime is 2121022201091. The next prime is 2121022201121. The reversal of 2121022201110 is 111022201212.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2121022201110.

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, 585430759 + ... + 585434381.

It is an arithmetic number, because the mean of its divisors is an integer number (22746724560).

Almost surely, 2^{2121022201110} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2121022201110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2911580743680).

2121022201110 is an abundant number, since it is smaller than the sum of its proper divisors (3702139286250).

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

2121022201110 is a wasteful number, since it uses less digits than its factorization.

2121022201110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5423.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2121022201110 its reverse (111022201212), we get a palindrome (2232044402322).

The spelling of 2121022201110 in words is "two trillion, one hundred twenty-one billion, twenty-two million, two hundred one thousand, one hundred ten".