2221101111120 has 320 divisors, whose sum is σ = 7447891994880. Its totient is φ = 545646772224.

The previous prime is 2221101111113. The next prime is 2221101111127. The reversal of 2221101111120 is 211111011222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2221101111113) and next prime (2221101111127).

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 2221101111120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221101111127) 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, 492153984 + ... + 492158496.

It is an arithmetic number, because the mean of its divisors is an integer number (23274662484).

Almost surely, 2^{2221101111120} is an apocalyptic number.

2221101111120 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 2221101111120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3723945997440).

2221101111120 is an abundant number, since it is smaller than the sum of its proper divisors (5226790883760).

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

2221101111120 is a wasteful number, since it uses less digits than its factorization.

2221101111120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7502 (or 7496 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2221101111120 its reverse (211111011222), we get a palindrome (2432212122342).

The spelling of 2221101111120 in words is "two trillion, two hundred twenty-one billion, one hundred one million, one hundred eleven thousand, one hundred twenty".