222120131100 has 216 divisors, whose sum is σ = 750267323568. Its totient is φ = 50588697600.

The previous prime is 222120131099. The next prime is 222120131159. The reversal of 222120131100 is 1131021222.

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 222120131100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4103814 + ... + 4157586.

Almost surely, 2^222120131100 is an apocalyptic number.

222120131100 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 222120131100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (375133661784).

222120131100 is an abundant number, since it is smaller than the sum of its proper divisors (528147192468).

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

222120131100 is a wasteful number, since it uses less digits than its factorization.

222120131100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54085 (or 54071 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 222120131100 its reverse (1131021222), we get a palindrome (223251152322).

It can be divided in two parts, 222120 and 131100, that added together give a triangular number (353220 = T₈₄₀).

The spelling of 222120131100 in words is "two hundred twenty-two billion, one hundred twenty million, one hundred thirty-one thousand, one hundred".