100222232220 has 72 divisors (see below), whose sum is σ = 331644484080. Its totient is φ = 24296298240.

The previous prime is 100222232207. The next prime is 100222232221. The reversal of 100222232220 is 22232222001.

100222232220 is a `hidden beast` number, since 100 + 2 + 222 + 322 + 20 = 666.

It is a super-2 number, since 2×100222232220² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 100222232193 and 100222232202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100222232221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25306665 + ... + 25310624.

It is an arithmetic number, because the mean of its divisors is an integer number (4606173390).

Almost surely, 2^100222232220 is an apocalyptic number.

100222232220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100222232220 is an abundant number, since it is smaller than the sum of its proper divisors (231422251860).

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

100222232220 is a wasteful number, since it uses less digits than its factorization.

100222232220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50617315 (or 50617310 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 100222232220 its reverse (22232222001), we get a palindrome (122454454221).

It can be divided in two parts, 1002 and 22232220, that added together give a palindrome (22233222).

The spelling of 100222232220 in words is "one hundred billion, two hundred twenty-two million, two hundred thirty-two thousand, two hundred twenty".