2220100123100 has 72 divisors (see below), whose sum is σ = 5078004570240. Its totient is φ = 840168262080.

The previous prime is 2220100123099. The next prime is 2220100123117. The reversal of 2220100123100 is 13210010222.

It is a happy number.

It is a super-2 number, since 2×2220100123100² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 625379 + ... + 2198021.

Almost surely, 2^{2220100123100} is an apocalyptic number.

2220100123100 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 2220100123100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2539002285120).

2220100123100 is an abundant number, since it is smaller than the sum of its proper divisors (2857904447140).

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

2220100123100 is a wasteful number, since it uses less digits than its factorization.

2220100123100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573419 (or 1573412 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 2220100123100 its reverse (13210010222), we get a palindrome (2233310133322).

The spelling of 2220100123100 in words is "two trillion, two hundred twenty billion, one hundred million, one hundred twenty-three thousand, one hundred".