2220121101100 has 108 divisors (see below), whose sum is σ = 5605015516464. Its totient is φ = 761076328320.

The previous prime is 2220121101071. The next prime is 2220121101101. The reversal of 2220121101100 is 11011210222.

It is not an unprimeable number, because it can be changed into a prime (2220121101101) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 39431569 + ... + 39487831.

Almost surely, 2^{2220121101100} is an apocalyptic number.

2220121101100 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 2220121101100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2802507758232).

2220121101100 is an abundant number, since it is smaller than the sum of its proper divisors (3384894415364).

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

2220121101100 is a wasteful number, since it uses less digits than its factorization.

2220121101100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64344 (or 64330 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2220121101100 its reverse (11011210222), we get a palindrome (2231132311322).

The spelling of 2220121101100 in words is "two trillion, two hundred twenty billion, one hundred twenty-one million, one hundred one thousand, one hundred".