2210121221120 has 88 divisors (see below), whose sum is σ = 5319799098264. Its totient is φ = 881030660096.

The previous prime is 2210121221057. The next prime is 2210121221137. The reversal of 2210121221120 is 211221210122.

It can be written as a sum of positive squares in 4 ways, for example, as 1110005530624 + 1100115690496 = 1053568^2 + 1048864^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 763532 + ... + 2236788.

Almost surely, 2^{2210121221120} is an apocalyptic number.

2210121221120 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 2210121221120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2659899549132).

2210121221120 is an abundant number, since it is smaller than the sum of its proper divisors (3109677877144).

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

2210121221120 is a wasteful number, since it uses less digits than its factorization.

2210121221120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473575 (or 1473557 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2210121221120 its reverse (211221210122), we get a palindrome (2421342431242).

The spelling of 2210121221120 in words is "two trillion, two hundred ten billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred twenty".